Abstract : We sampled wild birds for the Avian Influenza Virus (AIV) (H5 , H7 and H9) survey in the AI infected
regions of Guangdong during its eruptive period in early 2004. Seventy2six samples of blood serum , 125 swab samples and
21 organic samples were collected. The method of agar gel precipitation (AGP) and hemagglutination inhibitory (HI) was
adopted in serum detection. The chicken embryo culture was adopted in virus detection. Our results showed : (1) H9
viruses were only found in starlings of Nanpao , Shantou ,in the AI noninfected regions. (2) 3116 % H5 and 2317 % H9 im2
munoreactive blood serums were detected in Leizhou , Luoding , Haifeng and Shantou. The positive rates of wild birds in
inshore area are higher than in other regions. (3) The positive rate of migratory birds is higher than resident birds. There2
fore , we concluded that migratory birds would spread AIV in its eruptive period.

Fulltext in Chinese can be downloaded at Chinese version of F.I.C