> We can't vaccinate all the bats. It is possible. It isn't "vaccination" as we traditionally know it but there are gels that take advantage of bats' grooming behaviour. Put gels that kill virii on some bats. Other bats groom these bats and the gel(s) get(s) into these bats [0]

[0]https://www.ted.com/talks/daniel_streicker_what_vaccinating_...