Wikipedia has more on Chiroptophobia
Chiroptophobia (from Greek cheir, "hand", and pteron, "wing") is the fear of bats. People fear bats because bats can attack them to get blood or give them rabies. Though in reality, there are only three species of blood-sucking bats, all in Latin America, and 0.5% of all vampire bats carry rabies.
Due to the fact that this phobia is not usually life-altering, mainly because sufferers don't live near bat habitats, chiroptophobia can be left untreated.