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目的了解成都市人群甲型H1N1流感感染现状。方法按照国家方案采集不同年龄组人群血清标本,用血凝抑制(HI)试验方法进行抗体检测,HI抗体滴度≥1∶40判为阳性。结果成都市甲型H1N1流感阳性率8.85%(108/1221);13～17岁组阳性率最高(13.85%,P<0.05);男女性阳性率差异无统计学意义;就诊人群阳性率低于一般人群,但差异无统计学意义。结论成都市发生了甲型H1N1流感社区流行,但在人群中的自然感染未形成有效免疫屏障,甲型H1N1流感疫苗接种仍有必要。
Objective To understand the current status of influenza A (H1N1) infection in Chengdu. Methods Serum samples from different age groups were collected according to the national program. HI antibody test was used to detect HI antibody titers. HI antibody titers ≥1:40 were judged as positive. Results The positive rate of Influenza A (H1N1) in Chengdu was 8.85% (108/1221). The positive rate was 13.85% (13.85%, P <0.05) in the age group of 13-17 years. There was no significant difference between male and female The general population, but the difference was not statistically significant. Conclusion Influenza A (H1N1) influenza is endemic in Chengdu. However, natural infection in the population does not form an effective immune barrier. Influenza A (H1N1) vaccination is still necessary.