Incidence of chick embryo lethal orphan virus antibody in the fowl (Gallus domesticus) in Britain
Cook, J.K.
Research in Veterinary Science 11(4): 343-348
1970
ISSN/ISBN: 0034-5288 PMID: 4322524 Document Number: 18583
Serum samples from 30 flocks of adult fowls and 7 flocks of growers were examined for precipitins and neutralizing antibody to CELO virus. The number of adult flocks with at least 25% of the sample positive by the agar gel precipitin test and the neutralization test was 25/30 (83%) and 24/30 (80%) respectively. The incidence was lower in younger chickens while flocks maintained under conditions of strict hygiene were completely negative.