These cases present questions of Maryland law certified to us by the United States District Court for the District of Maryland, pursuant to the Uniform Certification of Questions of Law Act, Md.Code (1974, 1984 Repl.Vol.), §§ 12-601 through 12-609 of the Courts and Judicial Proceedings Article. 1 Each case draws into question the liability of a supplier of blood or blood products alleged to have transmit *708 ted the Acquired Immune Deficiency Syndrome (the AIDS virus) to the plaintiff-recipients. 2
I.
Miscellaneous No. 1 involves a suit against Miles Laboratories, Inc. (Miles), a commercial preparer and supplier of “Konyne” — a blood clotting factor concentrate. Plaintiffs Jane and John Doe, in a multi-count complaint filed in the federal district court, have alleged a cause of action against Miles, inter alia, in strict liability, implied warranty, and negligence.
As certified by the district court, the facts jointly agreed upon by the parties are essentially these: Jane Doe delivered a child in September of 1983. Several days later she was admitted to Shady Grove Adventist Hospital suffering from profuse vaginal bleeding. Her bleeding could not initially be controlled although she was given substantial amounts of blood derivatives.
In total, approximately 46-50 units of various blood derivatives were made available for transfusion into Mrs. Doe, although not all may have been given. During the attempt to stop the bleeding, her physicians administered a single “500 unit” vial of “Konyne” to Mrs. Doe. Ultimately, her bleeding stopped.
Subsequently Mrs. Doe developed a variety of health problems which assertedly led to the diagnosis of HIV (Human Immunodeficiency Virus) — the “AIDS” virus — and the diagnosis of ARC (Acquired Immunodeficiency Related *709 Complex). 3 Mrs. Doe has not been diagnosed as having actual AIDS, although there is a substantial risk that she may contract full-blown AIDS at some time in the future.
Miles purchases the blood plasma necessary for the preparation of Konyne from blood donors. It markets Konyne to hospitals and doctors; it does not administer the product to anyone. In this case, Miles provided Konyne to the Washington Hospital Center which in turn provided the particular vial administered to Mrs. Doe to the Shady Grove Adventist Hospital. The Konyne received by Mrs. Doe in September of 1983 was shipped by Miles in January of 1983. 4
A.
By Chapter 717 of the Acts of 1971, then codified as Maryland Code (1957, 1980 Repl.Vol.), Art. 43, § 136B, the General Assembly provided:
“As to the virus of serum hepatitis, neither strict liability in tort nor the implied warranties of merchantability and fitness shall be applicable to the procurement, processing, storage, distribution, and/or use of whole blood, plasma, blood products, and blood derivatives for the use of injection or transfusing the same or any of them into the human body for any purpose whatsoever.” (Emphasis supplied)
Chapter 21 of the Acts of 1982 added the Health-General Article to the Maryland Code. It repealed § 136B; in its place, it enacted § 18-402 which provided:
*710 “A person who obtains, processes, stores, distributes or uses whole blood or any substance derived from blood for injection or transfusion into an individual for any purpose may not be held liable for the virus of serum hepatitis under:
(1) Strict liability in tort;
(2) The implied warranty of merchantability; or
(3) The implied warranty of fitness.”
(Emphasis supplied)
The revisor’s note to § 18-402 stated that its provisions were derived without substantive change from former § 136B.
Section 18-402 was substantially amended by Chapter 259 of the Acts of 1986 (the 1986 amendment) to read:
“A legally authorized person who obtains, processes, stores, distributes, or uses whole blood or any substance derived from blood for injection or transfusion into an individual for any purpose is performing a service and is not subject to:
(1) Strict liability in tort;
(2) The implied warranty of merchantability; or
(3) The implied warranty of fitness.”
The Legislature provided that the 1986 amendment to § 18-402 would take effect on July 1, 1986. 5
(1)
The first certified question is whether the provisions of § 18-402, as amended in 1986, “exempt the commercial *711 preparer and supplier of a blood product from strict liability in tort where, assertedly as a result of the blood product, the recipient was infected with the AIDS virus prior to 1986.”
The 1986 amendment to § 18-402 eliminated the reference in the precursor statutes to the virus of serum hepatitis. It broadly insulated blood or blood product suppliers from strict liability in tort and from breach of the implied warranties of merchantability and fitness “for injection or transfusion into an individual for any purpose”; and it characterized this activity as a “service” (rather than a sale).
The Does acknowledge that the 1986 amendment to § 18-402 abrogated a strict tort liability cause of action against blood product suppliers for all transfusion-associated diseases. They point out that Mrs. Doe was transfused in September of 1988, well prior to the July 1,1986 effective date of the amendment to § 18-402 and, also, that suit was filed prior to July 1, 1986. The Does claim that the pre1986 blood shield statutes in effect when Mrs. Doe was infected with the AIDS virus, and at the time suit was filed, precluded recovery against a blood product manufacturer in strict liability in tort or breach of implied warranties only when the person contracted serum hepatitis. The Does contend that there is nothing in the history of the 1986 amendment to indicate a legislative intention that the statute be retroactively applied. Moreover, they invite attention to the report of the Senate Judicial Proceedings Committee which recognized that the 1986 amendment “expands” the scope of the exemption from liability by repealing “the limiting reference to the virus of serum hepatitis.” From this the Does glean an intention that blood suppliers would remain liable without fault with respect to all pre1986 transfusions resulting in disease or contaminants other than the virus of serum hepatitis.
Miles argues that the 1986 amendment was intended by the Legislature to apply to all cases of AIDS infection resulting from the use of blood products, regardless of the *712 date of the infection or the date upon which suit is filed. It says that the legislative history and context of the 1986 amendment shows that limiting it to prospective operation would be inconsistent with the legislative purpose. It suggests that because the AIDS virus was not isolated until 1984, and there was no test to detect the presence of the AIDS virus in the blood supply until 1985, the focus of the 1986 amendment was necessarily upon pre-1986 cases. Miles maintains that the Legislature, in dealing with such a significant public policy matter, could only have intended that the 1986 amendment be given retroactive application to include the vast majority of blood-related AIDS cases in which infection occurred prior to 1986. According to Miles, there could be no reason for the Legislature, in enacting the 1986 amendment, to create any distinction between those infected persons who discovered their infection and brought suit prior to July 1, 1986, and those who could not sue before that date because they had not yet discovered their infection.
We view the legislative history underlying enactment of the 1986 amendment as inconclusive at best. In these circumstances, the Maryland rule, most recently reaffirmed by Judge Rodowsky for the Court in
WSSC v. Riverdale Heights Volunteer Fire Co. Inc.,
After a thorough review of the history of § 18-402, the Court of Special Appeals, in
Roberts v. Suburban Hospital,
*713
Finding no clear expression of an intention that the 1986 amendment was to be retrospective, we answer the first certified question in the negative.
(2)
The second certified question is whether § 18-402, prior to its amendment in 1986, “exempt[s] the commercial preparer and supplier of a blood product from strict liability in tort where, assertedly as a result of receipt of the blood product, the recipient was infected with the AIDS virus.” The Does argue that the legislative history of the pre1986 blood shield statute discloses that the General Assembly, in the plainest of words, limited the immunity from transfusion-associated disease to the virus of serum hepatitis. Miles, on the other hand, argues that § 18-402, even before its amendment in 1986, was applicable to all pathogens which, like serum hepatitis and the AIDS virus, could not be detected or eliminated from blood products. According to Miles, the public policy considerations that led the Legislature in 1971 to enact the original version of § 18-402 are equally applicable to AIDS cases. It urges that “the pre-amendment version of § 18-402 merely expresses the General Assembly’s intent to limit that provision to those infectious agents that cannot be detected by reasonably available scientific techniques.”
We think the applicable history clearly demonstrates that the Legislature intended that the original version of what is now § 18-402, as enacted in 1971 and as recodified in 1982,
*714
apply solely to the disease of serum hepatitis. The Court of Special Appeals, in
Roberts,
and the federal district court in
Doe v. Miles Laboratories, supra,
both made clear that the limited application of the pre-1986 legislation to the serum hepatitis contaminant was deliberate. As stated by Judge Wilner for the court in
Roberts,
It is thus plain that, as originally introduced, the 1971 version of what is now § 18-402 was all-encompassing in its terms; its shield was not limited to serum hepatitis and it characterized the provision of blood as a “service.” Had the Legislature enacted the bill in this form it clearly would have included AIDS or any other as then unknown diseases that might be transmitted through blood. In view of the clarity of the legislative purpose in amending the Bill, it would be a forced interpretation indeed for us to expand the scope of the pre-1986 statutes to include the AIDS or any other infectious virus. We therefore answer the second certified question in the negative.
(3)
If § 18-402 is not applicable in either its original or amended form, the third certified question asks whether *715 “Maryland common law, and/or the Restatement (Second) of Torts, Section 402A, and its Comments, permit recovery from the commercial preparer and supplier (not health care provider) of a blood product, based on the theory of strict liability in tort, where, assertedly as a result of receipt of the blood product, the recipient was infected with the AIDS virus?”
In 1976, for the first time in
Phipps v. General Motors Corp.,
“Special Liability of Seller of Product for Physical Harm to User or Consumer
“(1) One who sells any product in a defective condition unreasonably dangerous to the user or consumer or to his property is subject to liability for physical harm thereby caused to the ultimate user or consumer, or to his property, if
(a) the seller is engaged in the business of selling such a рroduct, and
(b) it is expected to and does reach the user or consumer without substantial change in the condition in which it is sold.
“(2) The rule stated in Subsection (1) applies although
(a) the seller has exercised all possible care in the preparation and sale of his product, and
(b) the user or consumer has not bought the product from or entered into any contractual relation with the seller.”
We pointed out in
Phipps,
“For recovery, it must be established that (1) the product was in a defective condition at the time that it left the possеssion or control of the seller, (2) that it was unreasonably dangerous to the user or consumer, (3) that the defect was a cause of the injuries, and (4) that the product was expected to and did reach the consumer without substantial change in its condition.”
Id.
at 344,
We recognized that the plaintiff in a strict liability action need not prove any specific act of negligence on the part of the seller, since the inquiry in such an action “focuses not on the conduct of the manufacturer but rather on the product itself.”
Id.
at 344,
The theory of strict liability, we said in
Phipps,
was not a radical departure from traditional tort concepts, even though the plaintiff in such an action need not prove any specific act of negligence on the part of the seller.
Id.
at 351,
The various justifications for imposing strict liability in tort on manufacturers are set forth in Comment c to § 402A as follows:
“... the justification for the strict liability has been said to be that the seller, by marketing his product for use and consumption, has undertaken and assumed a special responsibility toward any member of the consuming public who may be injured by it; that the public has the right to and does expect, in the case of products which it needs and for which it is forced to rely upon the seller, that reputable sellers will stand behind their goods; that public policy demands that the burden of accidental injuries caused by products intended for consumption be placed upon those who market them, and be treated as a cost of production against which liability insurance can be obtained; and that the consumer of such products is entitled to the maximum of protection at the hands of *718 someone, and the proper persons to afford it are those who market the products.”
Thus, in adopting strict liability in tort in Maryland, we concluded that there was no reason “why a party injured by a defective and unreasonably dangerous product, which when placed on the market is impliedly represented as safe, should bear the loss of that injury when the seller of that product is in a better position to take precautions and protect against the defect.”
Id.
at 352-353,
Miles contends that § 18-402, as amended in 1986, derives from the common law of Maryland, namely that “provision of blood products is, in all cases, a service, not a sale, and strict liability does not apply.” The leading case representative of this common law view, according to Miles, is
Perlmutter v. Beth David Hospital,
“The supplying of blood by the hospital was entirely subordinate to its paramount function of furnishing trained personnel and specialized facilities in an endeavor to restore plaintiffs health. It was not for blood — or iodine or bandages — for which plaintiff bargained, but the wherewithal of the hospital staff and the availability of hospital facilities to provide whatever medical treatment was considered advisable. The conclusion is evident that the furnishing of blood was only an incidental and very secondary adjunct to the services performed by the hospital and, therefore, was not within the provisions of the Sales Act.
*719 If ... the court were to stamp as a sale the supplying of blood — or the furnishing of other medical aid — it would mean that the hospital, no matter how careful, no matter that the disease-producing potential in the blood could not possibly be discovered, would be held responsible, virtually as an insurer, if anything were to happen to the patient as a result of ‘bad’ blood.”
Miles points out that the Court of Special Appeals in Roberts, supra, 73 Md.App. at 11, 532 A.2d 1081 noted, with an extensive citаtion of authority, that the Perlmutter view was the majority rule with respect to suits against hospitals based on the actual transfusion of blood.
Miles further contends that, if the provision of blood products by a blood supplier instead of a hospital is considered a sale, it cannot be held strictly liable because such products are “unavoidably unsafe” within the contemplation of Comment k to § 402 A of the Restatement which provides:
“k. Unavoidably unsafe products. There are some products which, in the present state of human knowledge, are quite incapable of being made safe for their intended and ordinary use. These are especially common in the field of drugs. An outstanding example is the vaccine for the Pasteur treatment of rabies, which not uncommonly leads to very serious and damaging consequences when it is injected. Since the disease itself invariably leads to a dreadful death, both the marketing and the use of the vaccine are fully justified, notwithstanding the unavoidable high degree of risk which they involve. Such a product, properly prepared, and accompanied by proper directions and warning, is not defective, nor is it unreasonably dangerous. The same is true of many other drugs, vaccines, and the like, many of which for this very reason cannot legally be sold except to physicians, or under the prescription of a physician. It is also true in particular of many new or experimental drugs as to which, because of lack of time and opportunity for sufficient medical experience, there can be no assurance of *720 safety, or perhaps even of purity of ingredients, but such experience as there is justifies the marketing and use of the drug notwithstanding a medically recognizable risk. The seller of such products, again with the qualification that they are properly prepared and marketed, and proper warning is given, where the situation calls for it, is not to be held to strict liability for unfortunate consequences attending their use, merely because he has undertaken to supply the public with an apparently useful and desirable product, attended with a known but apparently reasonable risk.”
Miles argues that in Phipps we adopted § 402 A of the Restatement, together with its official comments, and thereby made clear that where a product is “unavoidably unsafe,” it is not subject to strict liability. Miles claims that Comment k applies to blood and blood products.
The Does contend that public policy in Maryland until July 1, 1986, as established by the Legislature, sanctioned strict liability actions in all blood product cases except those where the transfusion implicated the serum hepatitis virus. They argue that under Maryland common law, and § 402A, Miles — as a commercial manufacturer and seller of the blood derivative Konyne — is subject to strict liability if its product was in a defective condition and unreasonably dangerous at the time it was placed on the market. In this regard, the Does say that whether a transaction is a service or a sale for purposes of § 402 A is determined by the so-called “gravamen test” articulated in
Anthony Pools v. Sheehan,
The Does maintain that cases involving strict liability actions against hospitals for administering blood transfusions are not relevant since hospitals, unlike blood suppliers, are engaged in providing health services and not in selling blood products. The Does point out that, under § 402A, it makes no difference that Miles may have exercised all possible care in the preparation and sale of Konyne or that AIDS may not have been detectable in blood or blood products at the time of the sale in this case. The only issue, according to the Does, is whether the defective blood product was unreasonably dangerous, not whether the manufacturer exercised all possible care in its preparation.
The Does argue that the “unavoidably unsafe” formulation of Comment k to § 402 A does not shield Miles from strict tort liability. They suggest that we have never adopted Cоmment k in this State but that if we do it is an affirmative defense which shifts the burden of proof to the defendant to establish all of the conditions justifying the application of Comment k. Relying primarily upon
Belle Bonfils Memorial Blood Bank v. Hansen,
In determining whether Comment k to § 402 A was part of the common law of Maryland in 1983 when the injury occurred in this case, we first note that the seminal case adopting strict liability in tort was
Greenman v. Yuba Power Products, Inc.,
The first case which pressed the theory of strict liability in tort upon us was
Telak v. Maszczenski,
Schuchman v. Johns Hopkins Hospital, Prod.Liab.Rptr. CCH # 6557 (1970-78 Transfer Binder), 9 UCC Reporting Service 637, decided January 21, 1971, involved claims against a hospital for strict liability in tort and breach of implied warranties following a blood transfusion which transmitted the hepatitis virus to the patient. The Superior Court of Baltimore City (O’Donnell, J), after an extensive analysis of the cases, including Perlmutter and its progeny, concluded that a blood transfusion administered by a hospital was a service and not a sale; consequently, it dismissed the strict liability and warranty counts as not within § 402 A or the then applicable provisions of the Uniform Commercial Code.
The 1971 precursor to § 18-402 was enacted shortly after the
Schuchman
case was decided. As strict liability in tort was not then part of the cоmmon law of Maryland, the 1971 statute, not being inconsistent with the common law, did not alter or modify that law. Nor was the 1971 statute intended to preempt the common law by subjecting all suppliers of blood and blood products to strict liability in tort and implied warranty claims for all transfusion-associated diseases except the virus of serum hepatitis. In this
*724
regard, we note that repeal of the common law by implication is never favored.
See Hardy v. State,
Our adoption of § 402 A in
Phipps
in 1976 constituted a change in the common law of Maryland by judicial decision, a course of action we are authorized to take when, in light of changed conditions or increased knowledge, the former rule has become unsound in the circumstances of modern life.
See Ireland v. State,
It is undisputed that Konyne is a prescription product available only through a licensed physician; it is sold by Miles to hospitals and рhysicians. Needles and syringes necessary to administer Konyne are available at licensed pharmacies and injections of the product can be made in the home after a patient or a family member has been trained by a health care professional. Either under the “gravamen test” of
Anthony Pools, supra,
Blood and blood products have been found to be “unavoidably unsafe” under Comment k in a number of cases.
See Fogo v. Cutter Laboratories,
The cases which find blood and blood products to be unavoidably unsafe and thus within the ambit of Comment k mainly involve the hepatitis virus. They recognize the critical importance of these products to the health of the citizenry and the public interest in assuring their ready availability for medical treatment. These cases generally note that where the viral agent which contaminated the *726 blood was undetectable by any known scientific test at the time of the injury, the product’s great utility, its lack of any substitute, and its relatively small risk of transmitting the disease, renders it not “unreasonably dangerous” for its intended use.
In
Belle Bonfils Memorial Blood Bank v. Hansen, supra,
the question before the Supreme Court of Colorado was whether the Comment k exception to strict liability for unavoidably unsafe products applied to transfused blood contaminated with hepatitis virus. The court said that under Comment k, “the manufacturer or seller of a product which is vitally important yet unavoidably unsafe is not held strictly liable when it can prove that the product’s preparation, marketing, and accompanying warnings were carried out in conformance with the highest known scientific and technical standards.”
*727 In light of these factors, the court in Belle Bonfils commented, id. at 124, that “when a patient needs a blood transfusion, there is no real choice on the part of a physician to order it, a hospital or blood bank to supply it, or a patient to accept it.” Id. In this connection, the court remarked that the “raison d’etre of strict liability is to force some hazardous products out of the market,” a rationale which it found inapplicable to blood, a lifesaving product without a known substitute. Id. According to the court, the “overarching purpose of Comment k is to permit a defendant to show that the product is not ‘unreasonably dangerous.’ ” Id. at 125. In this regard it noted that the incidence of hepatitis associated with transfusion of whole blood was quite low, particularly when the blood was donated by volunteers rather than paid donors. Id. Thus, it concluded that “evidence of the source of transfused blood and of the availability of other, less risky alternative sources bears upon the reasonableness of the risk.” Id. To prevail on the Comment k defense, therefore, the court held that it was the defendant’s burden to prove compliance with all its elements.
Kozup v. Georgetown University,
In deciding the case, the court applied the law of the District of Columbia, relying upon and referring extensively to the holding in
Fisher v. Sibley Memorial Hospital,
As in Fisher, the court in Kozup rejected, on public policy considerations, the adoption of a rule that would hold a hospital or other blood supplier responsible, virtually as an insurer, if a patient was harmed as a result of impure blood. *729 Id. at 1058-59. In so concluding, the court said that in searching for an appropriate public policy regarding liability of a blood bank for providing blood to a hospital, it was guided by the fact that the vast majority of states had legislatively barred strict tort liability based on concern for the adequacy of the nation’s blood supply. Id. at 1059. It explained that the state of medical knowledge about AIDS at the time of the plaintiff’s transfusion was even less than was true of medical knowledge of hepatitis at the time of the Fisher opinion. The court summarized:
“There was not even a consensus of the medical community as to the fact that AIDS was transmitted by a blood-borne viral agent, much less idеntification of that agent or of a test to screen it out of the blood supply. Thus, the Fisher court’s emphasis on the ‘scientific inability to screen all carriers ... despite due care,’403 A.2d at 1133 , as a reason for refusing to label blood ‘unreasonably dangerous’ compels a similar result with respect to the ARC’s provision of blood prior to the development of the ELISA test for exposure to AIDS. It is relevant that the court in Fisher applied Comment K to § 402A of the Restatement (Second) of Torts, which excludes from strict liability:
those products, drugs in particular, which in the present state of human knowledge, are incapable of being made safe for their intended and ordinary use (i.e. rabies vaccine), but where existing medical experience justifies the marketing and use of the product despite the risk.
403 A.2d at 1134 . This language is in no way limited to hospitals as providers, and applies equally cogently to the ARC in the context of AIDS in blood in 1983.” Id.
The judgment was summarily affirmed on appeal by the United States Court of Appeals for the District of Columbia.
Contrasted with cases finding strict tort liability principles inapplicable to blood and blood products is
Cunningham v. MacNeal Memorial Hospital,
A total of 48 states have now enacted blood shield statutes. Some specifically declare a transfusion to be a service and thus not within § 402 A or the implied warranty sections of the Uniform Commercial Code; others exclude liability except for negligence; still others limit liability only if the defect cannot be deteсted.
See Roberts, supra,
*731 “ ‘[t]he public policy represented by these statutes is not difficult to discern: blood transfusions are essential in the medical area and there are not now, and realistically there may never be, tests which can guarantee with absolute certainty that the donated blood is uncontaminated with certain viruses.' ... These statutes reflect a legislative judgment that to require providers to serve as insurers of the safety of these materials might impose such an overwhelming burden as to discourage the gathering and distribution of blood.” (Quoting Garvey v. St. Elizabeth Hosp.,103 Wash.2d 756 , 759,697 P.2d 248 (1985)).
In the same vein, the court in
Hyland Therapeutics v. Superior Court,
We conclude that the common law of Maryland after Phipps was decided in 1976, and before enactment of the 1986 amendment to § 18-402, was consistent with that so well articulated in cases like Kozup and Fisher. Taking into account the absolute necessity for a continuously adequate supply of blood and blood products, that these substances are not merely useful but essential to life and health, that it was not known in 1983 that the AIDS virus was transmitted through blood, and there being no scientific test by which to detect the presence of the AIDS virus when the blood was administered in this case, we think that a blood clotting factor concentrate sold in such circumstances ordinarily is “unavoidably unsafe” as a matter of law under Comment k and hence not “unreasonably” dangerous under § 402 A. In other words, considering the unique nature of blood as a lifesaving, life-sustaining substance without any apparent substitutes, we are of the view that when it is sold, whether commercially or otherwise, the common law of Maryland in 1983 recognized blood and its derivatives as products within § 402 A and its commentary, including Comment k when applicable.
The singular medical utility of blood and blood products, together with the compelling necessity for their use when medically indicated, ordinarily outweighs the known risk in all blood transfusions that these products may contain some impurities. Strict tort liability principles are not applicable under Comment k when, at the time of distribution of such products, they contained a then unknown and unknowable infectious agent undetectable by any available scientific test. In such circumstances, the seller would not under
*733
then applicable common law precepts, including the substance of Comment k, be held strictly aсcountable in tort because the product was not free of the unknown contaminant which caused injury to the recipient; manifestly, the seller was not in a better position than the victim, or the victim’s physician, to take precautions against the unknowable defect in the product.
See Phipps, supra,
Our view of the applicable Maryland common law is not consistent with that part of the district court’s opinion in this case which held that the various justifications for applying strict tort liability principles were applicable to blood and blood products, and that the indetectability of the AIDS virus in blood was not a factor mitigating against the application of strict liability principles. In so ruling, that court was not swayеd by the arguments there advanced that providers of blood and blood products promoted the general welfare by making possible improved health; that it is a fundamental social policy of the State to promote the supply of blood and blood products; and that to allow strict products liability would create potentially substantial liability, and would so raise costs of production that the supply of blood could be fatally jeopardized.
See Doe, supra,
With specific reference to Konyne, Miles’ blood clotting factor concentrate, the court found as a fact that up to ninety-five percent of severe hemophiliacs — the prime users of the product — tested positive for exposure to the AIDS virus. Referring to the inevitably fatal nature of the disease for those who actually develop it, the court said that Comment k was factually inapplicable because the danger of contracting the disease from the product was not a reasonable one. Id. at 1479. This determination was made on disputed facts, e.g., the state of medical knowledge at the time the product was used, the availability of alternative therapies or other blood product substitutes, and whether Miles knew of the adverse risk/benefit ratio of its product at the time it was marketed. It is, of course, not part of our function to consider factual matters, but only questions of Maryland law. We, therefore, do not consider the district court’s specific factual findings when it denied Miles’ summary judgment motion. See n. 8, supra.
It appears to be undisputed, with reference to the AIDS virus, that before an antibody test for AIDS was discovered in 1985, blood clotting factor concentrates like Konyne were derived from the pooled blood plasma of thousands of *735 donors, thus presenting a much greater risk of containing the then unknown and indetectable virus than would be true in the case of an individual donation of blood. As to this, we note only that because the use of the product, viewed in hindsight, was certain to result in “unfortunate consequences,” as stated in Comment k, does not thereby subject the product to strict tort liability; considered at the time that the produet with its indetectable virus was administered, and taking account of the generally known risk of impurities in blood, a pertinent inquiry under Comment k is whether the product was “attended with a known but apparently reasonable risk.”
With the caveat herein expressed concerning the district court’s fact-finding prerogative, and having determined that § 18-402 is not applicable in either its original or 1986 amended form, we answer the third certified question generally in the negative, namely that under the common law of this State in 1983, strict tort liability would not ordinarily be applied in a suit against a commercial supplier of a blood product where the rеcipient was infected with the AIDS virus.
II.
Miscellaneous No. 18 involves a suit against the American Red Cross by Mary Doe, the parent of her minor son John, who allegedly contracted AIDS as a result of a transfusion of blood supplied by the Red Cross. In a multi-count complaint filed in the federal district court, the plaintiff alleged a cause of action against the Red Cross, inter alia, in strict tort liability, breach of the implied warranties of merchantability and fitness, and in negligence.
The pertinent facts are not in dispute. On July 26, 1984 John Doe experienced a nose bleed in his sleep; he had also emitted blood from his mouth the previous night. A physician advised Mrs. Doe that her son would require a blood transfusion and he referred John to the South Baltimore General Hospital for evaluation and treatment. After two other physicians examined John, he was transfused with *736 two units of packed red blood cells obtained from the Red Cross. One of the units allegedly was contaminated with the AIDS virus. Thereafter, John developed various health problems and in April 1986 he tested positive for antibodies to the AIDS virus. He has been diagnosed as suffering from AIDS Related Complex.
(1)
The first certified question is “whether the plaintiff who contracted the Acquired Immune Deficiency Syndrome (AIDS) virus through the transfusion of a blood product prior to the 1986 amendment [of § 18-402] [may] bring a product liability claim against the supplier of that blood product.”
As to strict liability in tort under the law of Maryland in effect in July, 1984 when the alleged injury occurred, we answer the first certified question in the negative for reasons set forth in the Miles portion of this opinion.
As to the implied warranties of merchantability and fitness, as contained, respectively, in Code (1983 Repl.Vol.) Sections 2-314 and 2-315 of the Commercial Law Article, we also answer the first certified question in the negative.
Section 2-314 implies a warranty of merchantability where “goods” are sold if the seller “is a merchant with respect to goods of that kind.” To be merchantable under this section, the goods must be, inter alia, “fit for the ordinary purpose for which [they] are used.” Section 2-315 implies a warranty that the goods shall be fit for the particular purpose for which they are sold. Section 2-105 defines “goods” in broad terms to mean “all things” which, in general, are “movable.” Section 2-106 defines a “sale” as the “passing of title from the seller to the buyer for a price.” Section 2-401(2) provides that unless otherwise agreed upon, “title passes to the buyer at the time and place at which the seller completes his performance with reference to the physical delivery of the goods.”
As earlier indicated, the transfer of blood from а blood supplier for a price constitutes a “sale” of goods under the
*737
UCC. We noted in
Phipps, supra,
Notwithstanding the fact that a sale of a product is here involved under the UCC, we conclude that implied warranty claims for personal injury, consequential, or wrongful death damages cannot be sustained where the claim for strict tort liability under § 402 A fails under Comment k — that when, because of an unknown and unknowable virus contained in the blood product which is indetectable by any available scientific test, the product is incapable of being made entirely safe, yet must be marketed due to the profound and essential public need for it. A number of jurisdictions which have considered the issue have concluded that the implied warranty claims could not be independently sustained. For example, some cases hold that upon a finding that strict liability in tort is inapplicable on Comment k grounds, the implied warranty сlaims merge into the disposition of the strict tort liability count; these cases indicate that to permit recovery on the implied warranty count would be inconsistent with the determination that the strict product liability claim in tort could not be supported.
See Belle Bonfils, supra,
In Uniform Commercial Code (2nd Ed., 1980), the authors, J. White and R. Summers, at § 9-6 (p. 347), recognize that, theoretically, the seller’s inability to discover defects in a blood product may not be relevant to a warranty cause of action. Nevertheless, they say that in the case of blood transfers, where it is not possible to discover defects in blood even by the use of the best medical research, it is questionable whether аny reason exists to recognize an implied warranty on any sale of blood. Referring to consequential damages for breach of warranty, the authors conclude that “[m]ost of the courts have recognized that a seller is liable for all damages resulting from his breach if they arise from circumstances that the seller knew about or had reason to know about, even if he did not consciously assume the risk of such liability.” Id. at 396.
In view of these authorities, and our own assessment of the controlling law, we conclude that the implied warranty claims rest upon statutorily-imputed representations by the seller that the blood was merchantable and fit; but because the blood product contained a viral agent unknown to medical science and therefore not within the seller’s control, an intention cannot be ascribed to the Legislature to imply in these circumstances a representation that the blood was free of the unknowable contaminant and was therefore merchantable and fit. To otherwise hold is to fasten upon the blameless seller of a vitally essential lifesaving product a wholly unreasonable liability certain to prove antithetical to the general public interest.
(2)
The second certified question is whether “the product liability claim against the supplier of a blood product, or ... [a] negligence claim against that supplier, [would] fall within the provisions of the Maryland Health Care Malpractice Claims Act (the Arbitration Act),” Maryland Code (1974, 1984 Repl.Vol.), § 3-2A-01, et seq. of the Courts and Judicial Proceedings Article.
*740 The Arbitration Act provides in § 3-2A-02 that “(a)ll claims, suits, and actions ... by a person against a health care provider for medical injury suffered by the person in which damages of more than ... [a designated amount] are sought are subject to and shall be governed by the [Act’s] provisions.” (Emphasis added). A “Health Care Provider” is defined in § 3-2A-01(e) to mean “a hospital, a related institution as defined in § 19-301 of the Health-General Article, a physician, an osteopath, an optometrist, a chiropractor, a registered or licensed practical nurse, a dentist, a podiatrist, and a physical therapist, licensed or authorized to provide one or more health care services in Maryland.” “Medical injury” is defined in § 3-2A-01(f) to mean an “injury arising or resulting from the rendering or failure to render health care.”
The Red Cross maintains that the Act requires arbitration of the plaintiff’s claims against it before they may be asserted in court. It says that the injury in this case arose from a medical procedure — the transfusion of blood administered at a hospital — and thus constitutes a “medical injury” under the Act. It also contends that it is а “health care provider” within the contemplation of the statute, even though the statutory definition does not expressly include blood-collecting agencies. In this regard, the Red Cross points out that the plaintiff has simultaneously filed arbitration claims against the hospital and three physicians for the transfusion-associated injury and that, inasmuch as all claims arose out of the same incident and are therefore inextricably entwined, the claims against the Red Cross must be considered a “medical injury” caused by a health care provider. Alternatively, the Red Cross contends that the plaintiff’s claims are arbitrable because they seek to impose respondeat superior liability upon it for negligence based on the conduct of its health care provider employees who allegedly failed adequately to screen donor blood collections.
Mrs. Doe argues that product liability and negligence claims against a blood supplier are not arbitrable under the Act’s provisions. Directing attention to the Act’s preamble, *741 she states that it explicitly provides that the Act was passed “for the purpose of providing for a mandatory arbitration system for all medical malpractice claims in excess of a certain amount.” Mrs. Doe contends that her claims against the Red Cross are not for medical malpractice but are predicated on the sale of a product claimed to be defective and unreasonably dangerous, not on the negligent rendering or failing to render health care.
We think it manifest that the Red Cross is not a “health care provider” and that the alleged injury in this case is not a “medical injury” within the ambit of the Act’s provisions. The claims against the Red Cross are not for medical malpractice of its employees, but for the organization’s failure to adopt proper testing and screening procedures to eliminate the contamination of its blood donations.
We therefore answer the second certified question in the negative.
See Brown v. Rabbitt,
QUESTIONS OF LA W ANSWERED AS HEREIN SET FORTH; COSTS TO BE EQUALLY DIVIDED BETWEEN THE PARTIES IN EACH CASE.
Notes
. Section 12-601 provides that this Court may answer "questions of law” certified to it, inter alia, by a United States District Court if the question "may be determinative of the cause then pending in the certifying court and as to which it appears to the certifying court there is no controlling precedent in the Court of Appeals of this State."
. AIDS has been described by the Surgeon General of the United States in a 1986 report as a virus which attacks a person's immune system and damages the person's ability to fight other disease. Without a functioning immune system to ward off other germs, the person becomes vulnerable to becoming infected by bacteria and viruses which may cause life-threatening illness. The Surgeon General’s report states that when the AIDS virus enters the blood stream, it attacks certain white blood cells. According to the Surgeon General there is presently no cure for AIDS and no vaccine to prevent it.
. According to the Surgeon General’s Report, ARC is a disease less serious than AIDS.
. Other “facts” in the case are sharply disputed by the parties. Under the Certification Act, however, it is not our function to evaluate or weigh evidence. We do not consider questions of fact; rather, we accept the statement of facts submitted by the certifying court.
Food Fair Stores, Inc. v. Joy,
. § 18-402 was again amended by Ch 493 of the Acts of 1987. The amendment expanded the shield for blood products to human tissues, organs and bones. It expressly provided for prospective application only, stating in Section 2 of the Act that it
"may not be applied or interpreted to have any effect upon or application to any cause of action arising prior to the effective date of this Act. However, the amendment by this Act of provisions of law in effect prior to the effective date of this Act may not be construed to preclude the application of those provisions of law to any cause of action arising prior to the effective date of this Act."
. The amendments were as follows (capitals representing language added to the bill, strike-outs indicating language deleted):
“Neither AS TO THE VIRUS OF SERUM HEPATITIS, NEITHER strict liability in tort nor the implied warranties of merchantability and fitness shall be applicable to the procurement, processing, storage, distribution, and/or use of whole blood, plasma, blood products, and blood derivatives for the use of injecting or transfusing the same or any of them into the human body for any purpose whatsoever. Such procurement;- processing, storage, distribution, and/or use constitutes the rendering of a service-by every person, firm, or corporation — participating therein, whether- or not any remuneration is paid therefor, and does-not-constitute a sale,”
. Phipps involved an alleged defect in a new automobile whereby the accelerator became stuck without warning, causing the vehicle to leave the road at high speed.
. Prior to certifying the questions of law in this case, the district court (Ramsey, J), after reviewing evidence before it, denied a motion filed by Miles for summary judgment on the strict liability in tort count. It was the court's view of the common law of Maryland in 1983 when the injury occurrеd that Miles, as a producer of blood, was selling a product and strict liability in tort was therefore applicable; that Comment k had never expressly been adopted in Maryland as to a blood product infected with disease; that Konyne, which carried the AIDS virus, nevertheless did not present a reasonable danger as required by Comment k; that it was not a mitigating factor that the AIDS virus was not detectable in blood prior to 1985; and that blood was a defective and unreasonably dangerous product subject to strict liability in tort. See
Doe v. Miles Laboratories; Cutter Laboratories Div.,
supra,
The district court granted Miles’ motion for summary judgment on the implied warranty count. It found that Mrs. Doe did not purchase blood from Miles for personal consumption but rather sought medical treatment, which her physician provided by prescribing and administering Konyne to her. On this basis, it granted summary judgment for Miles on the implied warranty count. Thus, none of the questions certified to us involves implied warranties under the Uniform Commercial Code.
.
Federal cases applying Maryland law have considered that we have adopted Comment k in this state. See
Werner v. Upjohn Company Inc.,
. The predominant purpose of a commercial transaction containing elements of both a service and a sale is deemed a sale if its “predominant factor ..., the thrust, the purpose, reasonably stated, is a transaction of sale with labor incidentally involved."
