I. Capua et al., UNEXPECTED ISOLATION OF VIRULENT NEWCASTLE-DISEASE VIRUS FROM COMMERCIAL EMBRYONATED FOWLS EGGS, Journal of veterinary medicine. Series B, 40(9-10), 1993, pp. 609-612
The authors report a case of casual isolation of virulent Newcastle di
sease virus (NDV) from embryonated eggs. The virus was isolated from u
ninfected chicken embryo liver and fibroblast cultures prepared from c
ommercial embryonated fowls' eggs. A serological and virological inves
tigation carried out on the breeders which had laid those eggs showed
high titres against NDV, and virus isolation from cloacal swabs. The v
irus was also isolated from the progeny of the same breeders which sho
wed no clinical signs of ND, following episodes of mortality. Vertical
transmission of the virus is discussed.