患儿男,16 d,因“纳差4 d伴发热半天”入院。系第1胎第1产,胎龄38周,出生体重2.7 kg,生后无窒息。入院前4 d出现吃奶差,曾针刺皮肤,半天前出现发热,体温高达40℃。其母孕1个月时,被人用刀砍伤,孕中晚期阴道少量出血,常接触电脑,父母均19岁,未婚先孕,未做婚前检查。查体:T 38 Children male, 16 d, because “anorexia 4 d with fever half day ” admission. Department of the 1st birth of the first child, gestational age 38 weeks, birth weight 2.7 kg, no suffocation after birth. 4 days before admission, poor feeding, had acupuncture skin, fever appeared half a day ago, body temperature up to 40 ℃. The mother of pregnancy 1 month, was chopped with a knife, a small amount of vaginal bleeding in the second trimester, often touching the computer, both parents were 19 years old, unmarried pregnant, not premarital examination. Physical examination: T 38