By Li Cohen
CBS News
Louisiana's Audubon Zoo is joining a list of other zoos and aquariums across the U.S. vaccinating resident animals against COVID-19. The zoo announced on Tuesday that the measure is an "additional layer of protection," and did not cite any cases among its animals.
The vaccine was developed by the company Zoetis, and was specially made for animals. The company has donated more than 11,000 doses of the vaccine to dozens of zoos, conservatories, sanctuaries and other organizations across 27 states. The vaccine, according to Zoetis, has been authorized for experimental use on a case-by-case basis by the U.S. Department of Agriculture.