Isolation of Infectious Bursal Disease Virus Using Indigenous Chicken Embryos in Kenya

Table 1

Virus antigen detection by agar gel precipitation test in bursa of Fabricius collected from field outbreaks and experimental chicks.

Source of bursa of Fabricius	Agar gel precipitation test results
	Number of positive	Number of negative	Total samples	Percentage of positive (%)
Chicks from suspected outbreaks (1st generation)	67	86	153	43.8
SPF chicks inoculated with field material (2nd generation)	44	23	67	65.7
Indigenous chicks inoculated with embryo propagated isolates (3rd generation)	44	0	44	100