患儿,男性,2(7/12)岁。自生后6个月开始经常发烧、咳嗽、腹泻。曾多次患肺炎、肠炎住院。近20天又开始发烧,体温波动在38°～40℃之间。咳嗽、腹泻、食欲明显减退、乏力消瘦入院。患儿系第2胎、笫2产,足月顺产,新法接生,无窒息史,以母乳喂养,10个月断奶,定时添加辅食,无定期预防接种。有1兄1弟,其兄出生后8个月经 Children, male, 2 (7/12) years old. 6 months after birth often have a fever, cough, diarrhea. Have repeatedly suffered from pneumonia, enteritis hospitalization. Nearly 20 days began to have a fever, body temperature fluctuations between 38 ° ~ 40 ℃. Cough, diarrhea, loss of appetite significantly, fatigue, weight loss and admission. Children in the second child, the second production, full-term birth, new law delivery, history of asphyxia, breastfeeding, 10 months of weaning, regular supplementary food supplement, no regular vaccination. A brother and a brother, his brother was born after 8 menstruation