目的:了解兵团2010年自然人群新甲型H1N1流感抗体水平及流行趋势。方法:利用血凝抑制(HI)试验方法检测兵团不同时间、人群新甲型H1N1流感抗体,比较不同时间、人群的新甲型H1N1流感抗体阳性率。结果:从1月-3月不同时间的检测,甲型H1N1流感抗体阳性率随着时间推移总体呈现下降趋势,依次为16.7%、15.6%、5.0和4.6%,差别有统计学意义。不同年龄组人群的甲型H1N1抗体阳性率差别较大,7岁～17岁年龄组最高(35.0%),不同年龄组抗体阳性率(P)差别有统计学意义。不同年龄组人群接种甲型H1N1疫苗后抗体阳性率差别无统计学意义。结论:兵团有10.2%的人群具有甲型H1N1流感保护性抗体,普通人群中已经建立一定的免疫屏障。7岁～17岁人群是新甲型H1N1流感暴发的主要人群,应重点防控。 Objective: To understand the Corps 2010 natural population of new influenza A (H1N1) antibody levels and trends. Methods: HI antibody was used to detect the new influenza A (H1N1) antibody in different time and population of Corps, and to compare the positive rate of new influenza A (H1N1) antibody in different time and crowd. Results: The positive rate of influenza A (H1N1) antibody showed a decreasing trend with time from January to March at different time points, which were 16.7%, 15.6%, 5.0 and 4.6% respectively, with statistical significance. The positive rate of A (H1N1) antibody in different age groups varied greatly, with the highest in the 7-year-old to 17-year-old group (35.0%). The positive rate of antibody in different age groups was statistically significant. There was no significant difference in the positive rate of antibody between groups A and B vaccinated in different age groups. Conclusion: Corps has 10.2% of the population with influenza A H1N1 influenza antibodies, the general population has established a certain immune barrier. 7-year-old to 17-year-old crowd is the main crowd of new influenza A (H1N1) outbreaks, should focus on prevention and control.