ScienceSwitzerlandFight against avian flu involves vaccinating birds in zoosTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceSwitzerlandJo Siegler06/06/2024June 6, 2024Avian flu continues to spread worldwide. Infections among birds have risen rapidly since 2020, and more and more mammals are now contracting the disease. In Switzerland, birds in zoos are now being vaccinated against the virus.https://p.dw.com/p/4gTzMAdvertisement