太原地区军团菌感染流行特征的研究

目的探讨太原地区军团菌感染频度及流行特征。方法用酶联免疫吸附测定法对门诊、住院病人及不同健康人群进行９种１５型军团菌ＩｇＭ及ＩｇＧ抗体的检测。结果成人患者军团菌ＩｇＭ抗体阳性率１７．４％，儿科病人１３．２％，成人及儿童患者均以上呼吸道急性感染比率最高，夏季多发。成人患者３０～５０岁年龄高发，儿科患者随年龄增加军团菌急性感染率增大，６例住院患者住院两周后发生急性感染，军团菌ＩｇＭ抗体阳性。健康人群以煤矿职工军团菌ＩｇＧ抗体阳性率最高（３６７％），城区儿童最低（９．５％）。门诊及住院患者以米克戴德军团菌感染为主，嗜肺军团菌次之；健康人群以嗜肺军团菌感染为主。结论军团菌是感染性疾病的常见病原，且有院内感染的可能性，健康人群感染也相当普遍，在经常与水、土接触职业人群更为明显

Epidemiological studies on legionella infection in Taiyuan area of Shanxi Province]

OBJECTIVE: To study the prevalence and epidemic features of legionella infection in Taiyuan area of Shanxi Province. METHODS: IgM and IgG antibodies against 15 types of nine species of legionella were determined with enzyme-linked immunosorbent assay for out-patients, in-patients and healthy population. RESULTS: Positive IgM to legionella accounted for 17.4% in adult patients and 13.2% in child patients, with the highest infection rate both in the adults and children with acute respiratory infection and prevalent in the summer. The peak age of infection was at 30 to 50 years old for adults. Incidence of acute legionella infection in children increased with age. Acute infection occurred in six patients two weeks after their hospitalization with positive IgM against legionella. In healthy population, infection rate was the highest in employees of coal mines (36.7%) and the lowest in urban children (9.5%). Legionella micdadei and legionella pneumophila were the two most common causes of infection in adults and children patients and Legionella pneumophila in healthy population. CONCLUSION: Legionella are common pathogen of infections, possible to cause nosocomial infection. Legionella infection is also common in healthy population, especially in those often exposed occupationally to water and soil.