Volume 90, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



The incidence of asymptomatic travel-related parasitic infection is uncertain. Previous studies did not distinguish new incident infections, from past infections. Regardless of symptoms, we performed multiplex real-time polymerase chain reaction on pre- and post-travel stool samples of Dutch long-term travelers to the (sub)tropics. Serological screening for spp. was only performed in travelers to sub-Saharan Africa. In total, 679 travelers were included in the study. The follow-up rate was 82% (556 of 679). Participants' median travel duration was 12 weeks. There was one incident infection with ; there were none with , 4 with spp. (1%), and 22 with (4%). Nine of 146 travelers (6%) seroconverted for spp. Routine screening of stool samples for parasitic infection is not indicated for asymptomatic people, who travel to the (sub)tropics for up to 3 months. Screening for spp. should be offered to travelers with fresh-water contact in endemic regions.


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  • Received : 14 Oct 2013
  • Accepted : 23 Jan 2014

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