在丹麦轮状病毒感染的流行季节为1～4月,作者于11月份用ELISA检测了225名6月龄～7岁健康儿童的轮状病毒IgA和IgG抗体水平。连续观察6个月,按统一标准对所有患急性胃肠炎儿童的严重程度进行分级,检查粪便中的病毒、致病菌及寄生虫,并作血清学诊断,以评价轮状病毒IgA和IgG抗体对自然感染的防御作用。观察期间,未 In Denmark, the epidemic season for rotavirus infection is from January to April. The authors tested levels of rotavirus IgA and IgG antibodies in 225 healthy children aged 6 months to 7 years by ELISA in November. After 6 months of continuous observation, the severity of all children suffering from acute gastroenteritis was graded according to a uniform standard, and the viruses, pathogens and parasites in the stools were examined and serologically diagnosed to evaluate rotavirus IgA and IgG The defensive effect of antibodies on natural infections. During observation, no