| [gumboro disease (infectious bursitis) in madagascar]. | four gumboro disease (ibd) outbreaks were identified between february and june 1993 in the antananarivo area (madagascar) exhibiting the largest commercial poultry production activity. affected birds were 3 to 5 weeks old, the mortality rate ranged from 5.70 to 27.4%. typical symptoms and gross lesions were observed, necrotic degeneration of bursal follicles was also detected. by means of agar-immunodiffusion test, ibd viral antigen was demonstrated. since the ibd has never been recorded in the ... | 1994 | 7991892 |