Table 1.
Number of poultry positive for influenza A H5N1 virus per population sample in one Chinese province over a 12-month period between 2004–2005.
| Month | Chicken | Duck | Geese | Minor poultry* |
| Jul | 0/127 | 0/117 | 0/60 | 0/0 |
| Aug | 0/147 | 4/264 | 0/3 | 0/0 |
| Sept | 0/70 | 1/204 | 2/93 | 0/35 |
| Oct | 0/117 | 8/234 | 2/57 | 0/0 |
| Nov | 0/151 | 5/206 | 4/150 | 0/0 |
| Dec | 4/139 | 9/163 | 6/118 | 0/0 |
| Jan | 2/130 | 14/197 | 7/91 | 0/0 |
| Feb | 3/134 | 8/172 | 5/99 | 1/17 |
| Mar | 0/124 | 6/207 | 0/69 | 0/21 |
| Apr | 0/128 | 1/219 | 0/52 | 0/21 |
| May | 0/130 | 0/246 | 0/75 | 0/30 |
| June | 0/110 | 0/262 | 0/90 | 0/021 |
* Minor poultry includes quail, pheasant, guinea fowl, pigeons are much lower in number and may not be available in the market for surveillance during some of the months.