Wash. Admin. Code § 296-14-340
(1) Verification that an infectious or contagious disease has been contracted requires written documentation of:
(2) The following cannot be used as verification that a worker has contracted an infectious or contagious disease:
[Statutory Authority: RCW 51.04.020, 51.32.181, and 51.32.390. WSR 23-06-062, § 296-14-340, filed 2/28/23, effective 3/31/23.]