根据 宁波市儿童保健工作常规 ,对我院辖区—宁海县城区 1998年至 2 0 0 1年系统管理的 2 79例体弱儿童的有关疾病资料进行了统计分析 ,现将结果报告如下。1　对象与方法1.1　对象 :凡 1998年至 2 0 0 1年期间 ,我院辖区—宁海县城区内 7岁以下儿童在定期 (即 1岁内每 3个月 According to the routine work of children’s health care in Ningbo, statistical analysis was conducted on the information about the disease of 2 79 cases of infirm children systematically administered in the district-Ninghai county from 1998 to 2001. The results are reported as follows. 1 Subjects and Methods 1.1 Subjects: During the period from 1998 to 2001, our hospital area - Ninghai County children under the age of 7 in the regular (ie 1 year old every 3 months