Fryatt R J, Teng J, Harries A D, Siorvanes L, Hall A P
Hospital for Tropical Diseases, London, U.K.
Trop Geogr Med. 1990 Apr;42(2):119-22.
A retrospective study was performed of clinical features in expatriates attending the Hospital for Tropical Diseases, London, with a sole diagnosis of ascariasis (100), trichuriasis (100), hookworm (75), and strongyloidiasis (36). Results were compared with a control group of 100 ex-patriates attending the same hospital in whom no diagnosis was made and in whom stool microscopy and peripheral blood eosinophil counts were normal. Almost one half of all patients with intestinal helminthiasis were asymptomatic. Of those with symptoms specific clinical features were no different from controls with the exception of a transient itch or rash in patients with strongyloidiasis. The presence of eosinophilia was not a reliable indicator of infection. This study suggests that it may be worth while performing stool microscopy in ex-patriates returning from the tropics even if they are asymptomatic.
对伦敦热带病医院仅被诊断为蛔虫病（100例）、鞭虫病（100例）、钩虫病（75例）和类圆线虫病（36例）的外籍患者的临床特征进行了一项回顾性研究。将结果与100名在同一家医院就诊的无诊断结果且粪便显微镜检查和外周血嗜酸性粒细胞计数正常的外籍对照组进行了比较。几乎一半的肠道蠕虫病患者无症状。在有症状的患者中，除类圆线虫病患者出现短暂瘙痒或皮疹外，特定临床特征与对照组无异。嗜酸性粒细胞增多并非感染的可靠指标。这项研究表明，即使从热带地区返回的外籍人员无症状，对其进行粪便显微镜检查可能也是值得的。
