TABLE 4

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

VirusClinical signNo. of chickens with specific sign by day postinoculationICPIa
12345678
Ck/TW/1680/13Normal500000001.675
Sick47410000
Dead136910
Ck/TW/8994/13Normal10109877770.3375
Sick00111000
Dead00012333
Ck/TW/8996/13Normal10101010101010100
Sick00000000
Dead00000000
  • a ICPI, intracerebral pathogenicity index.