Research Article

Changing Patterns of H6 Influenza Viruses in Hong Kong Poultry Markets

Table 6

Experimental transmission of recent H6N1 viruses from quail to chicken and from chicken to chicken.

VirusNo. of positive trachea/total no. of birds [ for each bird]
Quails to chickensChickens to chickens
Inoculated Direct contact Inoculated Direct contact

Qa/HK/CSW106/013/3(2.7, 2.0, 2.5)0/33/3(3.0, 2.0, 2.3)0/3
Ck/HK/SF4/013/3(2.0, 1.5, 2.7)0/33/3(2.0, 1.5, 2.0)0/3
Qa/HK/YU404/023/3(2.5, 2.5, 2.0)0/33/3(1.0, 2.3, 2.5)0/3
Ph/HK/SSP44/023/3(3.0, 2.7, 2.0)0/33/3(2.3, 2.0, 2.7)0/3
Ch/HK/CSW595/033/3(2.3, 2.0, 2.7)0/33/3(2.3, 1.5, 2.5)0/3

Titers in parentheses correspond to each bird in the group 3 days after inoculation.
Tracheal swabs were collected and titrated 5 days and 7 days after being put with inoculated group.