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Volume 14, Number 3—March 2008

Dispatch

Low Frequency of Infection with Avian Influenza Virus (H5N1) among Poultry Farmers, Thailand, 2004

Soawapak Hinjoy*, Pilaipan Puthavathana†, Yongjua Laosiritaworn*, Khanchit Limpakarnjanarat‡, Phisanu Pooruk†, Teerasak Chuxnum*, James M. Simmerman‡Comments to Author , and Kumnuan Ungchusak*
Author affiliations: *Ministry of Public Health, Nonthaburi, Thailand; †Mahidol University, Bangkok, Thailand; ‡Global Disease Detection/International Emerging Infections Program, Nonthaburi, Thailand;

Main Article

Table

Characteristics of 322 persons living on poultry farm in areas where 
avian influenza (H5N1) infections among poultry and humans had been confirmed 
since January 2004, Thailand

Variable No. persons (%)
Province
Chachoengsao 61 (18.9)
Kanchanaburi 32 (9.9)
Khon Kaen 65 (20.2)
Sukhothai 84 (26.1)
Suphanburi
80 (24.8)
Sex
M 155 (48.1)
F
167 (51.9)
Age, y*
<10 15 (4.7)
11–20 32 (9.9)
21–30 49 (15.2)
31–40 121 (37.6)
41–50
105 (32.6)
Current smokers 67 (20.8)
Chronic illness
74 (23.0)
Type of poultry maintained†
Layer hen 111 (34.5)
Broiler 42 (13.0)
Fighting cock 88 (27.3)
Backyard chicken 89 (27.6)
Egg-laying duck 7 (2.2)
Meat duck 8 (2.5)
Ornamental birds
3 (0.9)
Type of poultry farm
Company farm 125 (38.8)
Individual farm (backyard)
197 (61.2)
Observed increased deaths of poultry 231 (71.7)
Living on a mixed swine/poultry farm 24 (7.5)

*Age range 5–50 y; median 35 y.
†Not mutually exclusive.

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