作者自1970～1974年五年中,通过系统作血清学检查,发现41例呼吸道肺炎枝原体病,占同期急性呼吸道病毒感染(165例)的25％。该病呈地方性分布,每年均有小流行发生,但与季节无关。绝大多数均为老年患者(平均53岁),往往有其他疾病同时存在:慢性阻塞性支气管肺病22例、心血管疾患15例、肺结核3例。 30例(72％)胸部X线表现为病毒型肺病或肺-胸 In the five years from 1970 to 1974, 41 patients with respiratory Mycoplasma pneumoniae disease were found by systematic serological examination, accounting for 25% of the total acute respiratory virus infection (165 cases) in the same period. The disease is endemic, with minor epidemics occurring each year but not with the seasons. The vast majority of elderly patients (mean 53 years old), often with other diseases coexist: 22 cases of chronic obstructive bronchopulmonary disease, cardiovascular disease in 15 cases, 3 cases of tuberculosis. Thirty cases (72%) had chest X-ray findings of viral lung disease or lung-chest