A study was undertaken to test whether a live FIPV vaccine would prote
ct 9-week-old feline coronavirus seronegative kittens from feline ente
ric coronavirus (FECV)-induced enteric disease. The vaccine appeared t
o be safe when administered to kittens of this age. Vaccinated kittens
demonstrated protection to FECV challenge-exposure compared to nonimm
unized animals as evidenced by milder disease signs and less virus she
dding in their feces.