西陵区新冠血清抗体水平监测结果分析
Analysis of Monitoring Results of COVID-19 Serum Antibody Levels in Xiling District

目的：了解西陵区新冠病毒人群抗体水平变化情况，提前做好防疫物资和医疗资源的准备工作，最大程度保护人民群众生命安全和身体健康，最大限度减少疫情对经济社会发展的影响。方法：采用描述性流行病学方法，对西陵区本地人群新冠血清抗体监测资料进行统计分析。结果：西陵区11月(第四轮)本地人群IgG滴度水平中位数为265.17 AU/mL，较7月(第三轮)同人群IgG滴度水平(302.79 AU/mL)、4月(第二轮)同人群IgG滴度水平(302.60 AU/mL)和3月(第一轮)同人群IgG滴度水平(320.67 AU/mL)均显著下降(P < 0.05)。结论：西陵区本地人群IgG滴度水平仍处于较高水平，免疫屏障已经建立，且药物和医疗的可及性较之前更好，后续应对可能出现的感染波峰，发生医疗资源挤兑的可能性较低。
Objective: To understand the change of antibody level of COVID-19 population in Xiling District, prepare epidemic prevention materials and medical resources in advance, protect people’s life safety and health to the greatest extent, and minimize the impact of the epidemic on economic and social development. Methods: Descriptive epidemiological methods were used to statistically analyze the monitoring data of COVID-19 serum antibody in local population in Xiling District. Results: The median IgG titer level of the local population in Xiling District in November (fourth round) was 265.17 AU/mL, which was significantly lower than the IgG titer levels of the same population in July (third round) (302.79 AU/mL), April (second round) (302.60 AU/mL), and March (first round) (320.67 AU/mL) (P < 0.05). Conclusion: The IgG titer level of the local population in Xiling District is still at a high level, the immune barrier has been established, and the accessibility of drugs and medical care is better than before. It is less likely that there will be a medical resource crunch in response to possible infection peaks in the future.