Ashford R W, Hart C A, Williams R G
Department of Parasitology, Liverpool School of Tropical Medicine.
J Hosp Infect. 1988 Oct;12(3):221-4. doi: 10.1016/0195-6701(88)90010-2.
Following the discovery that two patients on a children's orthopaedic ward were excreting Enterobius, all patients and staff on the ward were screened for the presence of pinworms. None of the staff was infected but 11 (55%) of 20 patients either had Enterobius ova on the anal margin or excreted worms following piperazine treatment. Epidemiological investigations indicated that this was unlikely to be a ward outbreak because four of the infected children had been on the ward for under 3 days, i.e., less than the prepatent period for Enterobius. Although none of the children was symptomatic, all children and staff on the ward were treated with piperazine. Faecal samples were collected from nine children and the majority of their worm load was shed within 32 h of starting therapy. Microscopic examination of the adult male worms showed that each patient was excreting both Enterobius vermicularis and E. gregorii.
在发现儿童骨科病房的两名患者排出蛲虫后，对该病房的所有患者和工作人员进行了蛲虫筛查。工作人员均未感染，但20名患者中有11名（55%）在肛门边缘有蛲虫卵，或在接受哌嗪治疗后排出了蠕虫。流行病学调查表明，这不太可能是病房内的一次暴发，因为4名受感染儿童在病房的时间不到3天，即短于蛲虫的潜伏期。尽管没有儿童出现症状，但病房内所有儿童和工作人员都接受了哌嗪治疗。从9名儿童那里采集了粪便样本，大多数蠕虫负荷在开始治疗后的32小时内排出。对成年雄虫的显微镜检查显示，每名患者排出的既有蠕形住肠线虫，也有格氏住肠线虫。
