Table 3.

Calculation of EID₅₀

Dilution of NDV	No. of Eggs	Mortality				Accumulated Numbers			% of Mortality= A/A+B X 100	% of Viability= B/A+B X100
		24 h	48 h	72 h	96 h	Infected eggs (A)	Noninfected eggs (B)	Total (A+B)
10−1	5	3	2	0	0	5	0	5	100	0
10−2	5	2	1	1	1	5	0	5	100	0
10−3	5	2	1	2	1	5	0	5	100	0
10−4	5	0	1	2	2	5	0	5	100	0
10−5	5	0	0	2	2	4	1	5	80	20
10−6	5	0	1	2	0	3	2	5	60	40
10−7	5	0	0	2	0	2	3	5	40	60
10−8	5	0	0	0	1	1	4	5	20	80
10−9	5	0	0	0	0	0	5	5	0	100
10−10	5	0	0	0	0	0	5	5	0	100