Avian influenza virus infection in people occupied in poultry fields in Guangzhou city

• Published in: Zhōnghuá liúxíngbìng zázhì Vol. 30; no. 11; p. 1111
• Main Authors: Liu, Yang, Lu, En-jie, Wang, Yu-lin, Di, Biao, Li, Tie-gang, Zhou, Yong, Yang, Li-li, Xu, Xiao-yin, Fu, Chuan-xi, Wang, Ming
• Format: Journal Article
• Language: Chinese
• Published: China 01.11.2009
• Subjects: Adult; Agriculture; Animals; Female; Humans; Influenza A Virus, H5N1 Subtype; Influenza in Birds - epidemiology; Influenza in Birds - virology; Influenza, Human - epidemiology; Influenza, Human - virology; Male; Middle Aged; Occupational Exposure; Poultry
• ISSN: 0254-6450

To conduct serological investigation on H5N1/H9N2/H7N7 infection among people occupied in poultry fields. Serum samples were collected from people working in live poultry and none-poultry retailing food markets, poultry wholesaling, large-scale poultry breading factories and in small-scale farms, wide birds breeding, swine slaughtering houses and from normal population. Antibodies of H5, H9 and H7 with hemagglutination inhibition and neutralization tests were tested and analyzed. Logistic regression and chi(2) test were used. Among 2881 samples, 4 were positive to H5-Ab (0.14%), 146 were positive to H9-Ab (5.07%) and the prevalence of H9 among people from live poultry retailing (14.96%) was the highest. Prevalence rates of H9 were as follows: 8.90% in people working in the large-scale poultry breading factories, 6.69% in the live poultry wholesaling business, 3.75% in the wide birds breeding, 2.40% in the swine slaughtering, 2.21% in the non-poultry retailing, 1.77% in the rural poultry farmers and 2.30% in n