They lap, not suck, small amounts of blood from tiny wounds they make in wild and farm animals. They rarely attempt to feed on humans because human blood is not palatable to them. Bats get entangled in our hair. Bats do not get entangled in human hair. They may, however, fly close to a person when in pursuit of an insect, particularly near water.
Bats carry rabies.
Like all mammals, bats can contract rabies, but they are not asymptomatic carriers of the virus. When a bat gets rabies, it usually dies. The frequency of rabies in bats is very low. Scientific studies have shown that less than one-half of one percent of bats contract rabies. Nevertheless, rabies is a serious disease, and left untreated, it is always fatal.