(一)发病的性别,年龄与季节:1958年9月至1959年3月,我院收治了麻疹合并肺炎患儿510名,其中男性患儿263例,占51.6%;女性患儿247例,估48.4%。发病率与性别无甚关系。本组病例中无四个月以下的病例;二岁以下的乳幼儿373例,占全部病例的73%;五岁以下的491例,占96.3%;五岁以上的仅19例,估3.7%。麻疹合并肺炎的发病率与年龄有绝对关系,年龄越 (A) the incidence of sex, age and season: September 1958 to March 1959, our hospital admitted 510 children with measles and pneumonia, including 263 cases of male children, accounting for 51.6%; 247 cases of women with children, Estimated 48.4%. Incidence has nothing to do with gender. In this group of patients no cases of less than four months; 373 cases of infants under the age of two, accounting for 73% of all cases; 491 under the age of 49, accounting for 96.3%; over the age of only 19 cases, estimated 3.7% . The incidence of measles combined with pneumonia and age have an absolute relationship, the older