DENVER -

A wild bat in the primate exhibit at the Denver Zoo has tested positive for rabies.

A zoo staffer captured the sick bat last weekend. KMGH-TV in Denver reports that the zoo believes no visitors had contact with the bat. But zoo officials say that people who were at the zoo Aug. 2 should call health officials if they did see or touch the bat.

The zoo says its animals are routinely vaccinated for rabies, and that there is no concern that any of the zoo animals were infected.

Rabies is caused by a virus transmitted by the bite of an infected animal. Bat bites may not be visible, so anyone who has had contact with a bat should be evaluated for exposure.