Volume 8, Number 2—February 2002
Research
Lack of Evidence for Human-to-Human Transmission of Avian Influenza A (H9N2) Viruses in Hong Kong, China 19991
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 |
1Presented in part at the International Conference on Emerging Infectious Diseases 2000, Atlanta, Georgia, July 2000 (Poster #55), Session 7, July 16-19, 2000.