Health officials are working to alert hundreds of people in 38 states and seven countries who may have been exposed to rabies in bat-infested cabins in Wyoming's Grand Teton National Park over the past few months. None of the bats found in some of the eight linked cabins at Jackson Lake Lodge had tested positive for rabies. The other bats weren't killed but were shooed out through cabin doors and windows. Health officials deemed it better safe than sorry to alert everybody that they might have been exposed by being bitten or scratched. When people are sleeping, a bat bite or scratch can go unseen and unnoticed. Bats are a frequent vector of the rabies virus. Once symptoms occur, muscle aches, vomiting, or itching, rabies is almost always fatal in humans. The cash-strapped CDC is contacting the foreign visitors. Wyoming Map