期刊
EPIDEMIOLOGY AND INFECTION
卷 139, 期 1, 页码 52-58出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0950268810002189
关键词
Influenza; pandemic; serology
资金
- National High Technology Research and Development Program of China (863 Program) [2008AA02Z416]
- Beijing Natural Science Foundation [7082047]
- Beijing Science and Technology Commission [2009ZX10004-315]
In order to determine the prevalence of antibody against 2009 H1N1 influenza in Beijing, we conducted a serological survey in 710 subjects, 1 month after the epidemic peak. We found that 13.8% of our cohort was seropositive. Subjects aged >= 60 years recorded the lowest seroprevalence (4.5%). The age-weighted seroprevalence of 14.0% was far lower than the supposed infection rate at the epidemic peak, derived from the basic reproduction number for 2009 H1N1 virus. For subjects who had received the pandemic vaccine seroprevalence was 51.4%. In subjects aged >= 60 years the seasonal influenza vaccination was not significantly associated with being seropositive. Our study suggests that many factors, and not just the immunological level against 2009 H1N1 influenza in the community, affected the spread of the virus within the population of Beijing.
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