San Diego County Health and Human Services Agency officials issued a warning recently to avoid contact with bats, following the positive test of rabies was determined in a bat found in Vista.

The bat found in Vista was the fifth to test positive for rabies in the year, county health officials said. Bats infected with the disease can readily transmit it to humans, whether dead or alive. At least three young boys came into contact with the bat found in Vista before delivering it to a local Petco store, whose employees contacted county health officials.

The boys’ identities remains unknown. The disease can be deadly to humans.