随着儿童年龄的增长，活动范围增大，各种自主活动增多，在日常生活中易发生皮肤破损。儿童家长将受伤孩子送到医院就诊时，诊治医生往往首先给患儿注射破伤风抗毒素（下简称破抗）以防止发生破伤风。由于计划免疫工作的大力普及，绝大多数适龄儿童都按照计划免疫程序进行了预 As children grow older, the range of activities increases, various types of voluntary activities increase, and skin damage tends to occur in daily life. Children and parents will be injured children to the hospital for treatment, the diagnosis and treatment of doctors often first give the children injected tetanus antitoxin (hereinafter referred to as broken resistance) to prevent the occurrence of tetanus. Due to the vigorous popularization of planned immunization work, the vast majority of school-age children were pre-immunized