TABLE 4.

Determination of the ICPI of the chicken H5N2 viruses prevalent in Taiwan

Virus	Clinical sign	No. of chickens with specific sign by day postinoculation								ICPIa
		1	2	3	4	5	6	7	8
Ck/TW/1680/13	Normal	5	0	0	0	0	0	0	0	1.675
	Sick	4	7	4	1	0	0	0	0
	Dead	1	3	6	9	10
Ck/TW/8994/13	Normal	10	10	9	8	7	7	7	7	0.3375
	Sick	0	0	1	1	1	0	0	0
	Dead	0	0	0	1	2	3	3	3
Ck/TW/8996/13	Normal	10	10	10	10	10	10	10	10	0
	Sick	0	0	0	0	0	0	0	0
	Dead	0	0	0	0	0	0	0	0

^aICPI, intracerebral pathogenicity index.