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患儿,男,10月。平时健康,生产时正常,此次病前患严重鼻卡他,发热,烦燥不安等,诊断为病毒性疾病;6天后发现患儿右腿活动不便,伴便秘。体查:右下肢肌力,肌张力降低,膝反射消失,感觉正常。X 线片正常。右下肢呈进行性无痛性麻痹。临床诊断为麻痹型小儿麻痹症。大便分离出肠道病毒,经鉴定为麻痹病毒Ⅲ型疫苗株。当麻痹恢复期血清学检查IgA 抗体为麻痹病毒Ⅲ型。患儿未曾接受麻痹病毒疫苗,唯一值得考虑疫苗病毒来源是经常在一起玩耍的2岁的堂兄,他是在患儿开始发热前一周口服第二次三价麻痹疫苗。患儿18个月时首次发
Children, male, October. Usually healthy, normal production, the disease before a serious nose card him, fever, irritability, etc., diagnosed as viral disease; 6 days found that children with right leg activity inconvenience, with constipation. Physical examination: Right lower extremity muscle strength, muscle tension decreased, knee reflex disappeared, feeling normal. X-ray film is normal. Right lower limb was progressive painless paralysis. Clinical diagnosis of paralytic polio. Stool isolated from enterovirus, identified as paralytic virus type III vaccine strain. When paraquat convalescent serology IgA antibodies are paralytic type III. The only thing worthy of consideration in children who have not been exposed to the paralytic virus vaccine is the 2-year-old cousin who often plays together, and who orally take the second trivalent paralytic vaccine a week before the child starts fever. Children 18 months when the first hair