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Volume 8, Number 2—February 2002

Lack of Evidence for Human-to-Human Transmission of Avian Influenza A (H9N2) Viruses in Hong Kong, China 19991

Timothy M. Uyeki*Comments to Author , Yu-Hoi Chong†, Jacqueline M. Katz*, Wilina Lim†, Yuk-Yin Ho†, Sophia S. Wang*, Thomas H.F. Tsang*, Winnie Wan-Yee Au†, Shuk-Chi Chan†, Thomas Rowe*, Jean Hu-Primmer*, Jensa C. Bell*, William W. Thompson*, Carolyn Buxton Bridges*, Nancy J. Cox*, Kwok-Hang Mak†, and Keiji Fukuda*
Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA; †Department of Health, Hong Kong Special Administrative Region of China;

Main Article

Table 3

H9N2 serologic results of cohort studies involving family members and health-care workers, Hong Kong, 1999

Patient 1 Patient 2
Family members Exposed (n=3) Unexposed (n=11) Exposed (n=6) Unexposed (n=1)
Median age (years), range 30
(2 to 31) 31
(<1 to 39) 31.5
(2 to 55) 68
Male:female 0.043055556 1:0.8 0.042361111 0.0416666667
Seropositive 0 0 0 0
Health-care workers Exposed (n=30) Unexposed (n=75) Exposed (n=15) Unexposed (n=23)
Median age (years), range 29.5
(19 to 51) 28
(19 to 59) 36
(24 to 56) 36
(25 to 50)
Male:female 0.044444444 1:3.4 0.051388889 0.0159722222
Seropositive 0 1 0 0

Main Article

1Presented in part at the International Conference on Emerging Infectious Diseases 2000, Atlanta, Georgia, July 2000 (Poster #55), Session 7, July 16-19, 2000.

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