Gumboro-like disease in Nigeria

A disease was observed in 3 to 7 weeks old chickens in Nigeria between April 1969 and July1971; seven outbreaks on eleven farms containing20,000 chickens were recorded. The mortality was in the region of 12·5 per cent with a morbidity rate of up to60 per cent. From the clinical signs, epidemiology, pathology and microbiology of the disease described it would appear that Infectious bursal or Gumboro disease occurs in Nigeria.