When pregnant queens are infected in early to mid pregnancy, abortion or stillbirth is the usual result. (aspcapro.org)
Live vaccines are never recommended for pregnant queens and immune suppressed cats, therefore inactivated modified vaccines are preferred. (cat-health-guide.org)
The use of FPV MLV vaccines should be avoided in pregnant queens and kittens less than one month of age. (vetmed.ucdavis.edu)