“For farmers in Latin America, vampire bats live up to their dark reputation. Their bites weaken cows and open the way for infections. Worst of all, the rabies they sometimes carry can kill livestock and, occasionally, people as well. Now scientists have developed an innovative way to vaccinate the bats against the virus—by making use of their extraordinary fondness of mutual grooming.

In a study published as a biorXiv preprint on 12 June, researchers showed that after they applied an oral vaccine in the form of a thick gel to the fur of some members of a colony of common vampire bats (Desmodus rotundus), mutual licking helped spread the vaccine rapidly through the population.”

From Science.