我院在1977年秋和1978年春曾对苏坡公社几个工厂和街道的2440名婴幼儿进行佝偻病的发病调查(下称前次)。四年来在成都地区普遍展开了佝偻病的防治工作(服鱼肝油或及肌注维生素 D_3,鼓励户外活动接受日照等详见另文)。1982年秋在前次同一地 In the autumn of 1977 and the spring of 1978, our hospital conducted a survey on the incidence of rickets in 2,440 infants and young children at several factories and streets in the Suburb commune (hereinafter referred to as the “previous case”). In the past four years, prevention and treatment of rickets in general have been carried out in Chengdu (taking cod liver oil and intramuscular injection of vitamin D 3, encouraging outdoor activities to receive sunshine, etc.). Autumn 1982 in the same place last time