3 not normal
The animals trials for coronavirus vaccines have always failed because the animals got sick and/or died :
Studies in Ferrets : https://t.co/puzU4oKjXE
Cats: https://t.co/8vG4hjYmlk
Mice : https://t.co/iyahOyVQZ8
Mice: https://t.co/TbQnwlp264