From the end of August, though I hadn't seen this particular press release until now. An excerpt:

About 3.5 million doses of the experimental vaccine Onrab are being distributed in parts of Pennsylvania, West Virginia and Tennessee — which also are getting the approved vaccine — plus four other states.

Onrab comes in blister packs with green, marshmallow-flavored coating. Wildlife Services hopes it may be approved next year in spite of lingering pandemic-related delays.

Onrab appears to be of viral vector format and a cursory glance at available literature seems to indicate shedding...?

Also, mist/airborne/contact 'vaccines' incoming?

Some scientists have speculated that bats could be vaccinated during hibernation, perhaps with a fine mist or with a gel that could be transferred from bat to bat, Chipman said. Early research is testing the idea in vampire bats, which live in Mexico and Central and South America and might spread such a vaccine within a colony by grooming each other.

All the world's a lab.