冬夏季军团菌自然感染状况的研究

本文用定群研究的方法,观察了南京地区自然人群冬夏季LDB₁型抗体的分布动态。结果表明,夏季抗体阳性率13.03%(29/990),比冬季的1.65%(19/1146)高 7.89倍,而GMT夏季(1:5.05)比冬季(1:1.67)高3倍。夏季抗体滴度 ≥ 1:128者4人(0.4%),冬季最高滴度1:32(1人)。男女间抗体阳性率和GMT无明显差异。各年龄组和不同职业人群的抗体水平夏季均高于冬季。各职业人群的抗体阳性率以养路工最高,幼儿园儿童最低。此外,对LDB感染季节性特征的意义。感染情况和可能传播方式等问题进行了讨论。

Study on the State of Natural Infection with Legionnaires' disease Bacteria during winter & Summar Seasons

This paper reports that changes of distribution of antibody levels against Legionella pneumophila serogroup I during winter and summer seasons were observed in general population of Nanjing Area by cohort survey. The results showed a prevalence of antibody in summer 13.03% (29/990) was 7.89 times higher than the rate in winter season 1.65% (19/1146). The GMT in summer (1:5.05) was found to be 3 times that of in winter (1:1.67). Among the people surveyed in summer 4 Persons possessed a titer equal and more than 1:128. whereas the titer found in winter season was 1:32.There are no significant differences between both sexes. The antibody levels for different age and occupational groups in summer were found to be higher than those in winter. The highest level of antibodies was found in workers whose duties were railway repair.Besides, a brief suggestion on the seasonity of Legionella infection and its possible route of transmission of infection in Nanjing Area were made.