Ind. Admin. Code tit. 410, r. 1-2.5-82 – Arboviral disease (non-neuroinvasive and neuroinvasive); specific control measures

Sec. 82. The specific control measures for arboviral encephalitis (West Nile virus, La Crosse/California serogroup virus, eastern equine encephalitis, western equine encephalitis, Powassan encephalitis, St. Louis encephalitis, dengue, chikungunya virus, and Japanese encephalitis) are as follows:

(1) An investigation by the local health officer shall be performed immediately for the purpose of identifying location and presence of vector mosquitoes. If applicable, the local health officer shall:
1. (A) obtain travel history prior to illness; and
2. (B) identify traveling companions who may have been exposed.
Active surveillance shall be instituted. The local health officer shall identify areas in the community where there is a need for vector control. Identification of cases in horses, birds, or humans provides evidence of virus presence and amplification in the community environment.
(2) Use contact precautions until enterovirus meningoencephalitis is eliminated from the list of possible diagnoses.
(3) Concurrent disinfection is not required.
(4) Quarantine is not required.
(5) Immunization is not available. Protection of contacts is not applicable. Fogging or spraying insecticides:
1. (A) has been effectively used to abort urban epidemics; and
2. (B) may be recommended by the department.
(6) The Centers for Disease Control and Prevention and the Council of State and Territorial Epidemiologists set the standard clinical and laboratory case definition.

(Indiana Department of Health; 410 IAC 1-2.5-82; filed Nov 25, 2015, 2:54 p.m.: 20151223-IR-410150039FRA; readopted filed Nov 12, 2021, 8:41 a.m.: 20211208-IR-410210385RFA; readopted filed Nov 14, 2025, 11:18 a.m.: 20251210-IR-410240588RFA)