I. Capua et al., A NOVEL INFECTIOUS-BRONCHITIS STRAIN INFECTING BROILER-CHICKENS IN ITALY, Journal of veterinary medicine. Series B, 41(2), 1994, pp. 83-89
An outbreak of severe respiratory disease in flocks of broiler chicken
s was associated with the isolatin of a 'novel' strain of infectious b
ronchitis virus (IBV). The isolate, designated 624/I, was isolated fro
m 9 of the 11 flocks sampled. The results of cross neutralisation and
haemagglutination-inhibition tests showed isolate 624/I to be antigeni
cally distinct from several European and American strains. In a serolo
gical survey carried out on affected flocks, specific antibodies to IB
V strain 624/I and turkey rhinotracheitis (TRT) virus were detected.