Boggild Andrea K, Yohanna Seychelle, Keystone Jay S, Kain Kevin C
Department of Laboratory Medicine & Pathobiology, Faculty of Medicine, University of Toronto, ON, Canada.
J Travel Med. 2006 May-Jun;13(3):138-44. doi: 10.1111/j.1708-8305.2006.00032.x.
International travel is associated with increased risk of vector-borne illnesses, particularly malaria. The objective of this study was to prospectively assess the relative frequency of parasitic diseases in Canadian travelers and to characterize demographic and travel-related predictors of these infections.
Data on Canadians and new immigrants who crossed international borders and were seen in the Tropical Disease Unit of Toronto General Hospital between November 1997 and June 2003 were prospectively collected and entered into the GeoSentinel Surveillance Network database.
Of 3,528 returned Canadian travelers and new immigrants in the database, 1,010 had a parasitic infection diagnosed. Mean age of the 3,528 travelers was 37.3 years, and 42.6% were male. Those diagnosed with parasitic infections were more likely than the remaining cohort to have been traveling for the purpose of immigration (21.1% vs 7.1%, p < 0.001), or visiting friends and relatives (VFR) (17.9% vs 11.8%, p < 0.01). Common parasitic infections included nonhistolytica amebiasis (N= 209), malaria (N= 143), cutaneous larva migrans (N= 105), giardiasis (N= 74), and schistosomiasis (N= 48).
Parasitic infections occurred in 29% of Canadian travelers. New immigrants and VFRs are at increased risk for malaria, as well as protozoal and helminthic infections.
国际旅行会增加虫媒传播疾病的风险，尤其是疟疾。本研究的目的是前瞻性评估加拿大旅行者中寄生虫病的相对发病率，并确定这些感染的人口统计学和旅行相关预测因素。
前瞻性收集1997年11月至2003年6月期间穿越国际边境并在多伦多综合医院热带病科就诊的加拿大人和新移民的数据，并录入全球哨点监测网络数据库。
数据库中的3528名回国加拿大旅行者和新移民中，有1010人被诊断患有寄生虫感染。3528名旅行者的平均年龄为37.3岁，42.6%为男性。被诊断患有寄生虫感染的人比其余人群更有可能是为了移民（21.1%对7.1%，p<0.001）或探亲访友（17.9%对11.8%，p<0.01）而旅行。常见的寄生虫感染包括非溶组织内阿米巴病（N=209）、疟疾（N=143）、皮肤幼虫移行症（N=105）、贾第虫病（N=74）和血吸虫病（N=48）。
29%的加拿大旅行者发生了寄生虫感染。新移民和探亲访友者感染疟疾、原生动物和蠕虫感染的风险增加。
