Eosinophilia in the returning traveler

Infect Dis Clin North Am. 2012 Sep;26(3):781-9. doi: 10.1016/j.idc.2012.05.004. Epub 2012 Jul 3.


An elevated eosinophil count is a common, frequently underrecognized finding in travelers returning from the tropics and elsewhere. Although there are multiple causes of eosinophilia in a traveler, it is often related to an acquired helminth infection. In some cases these infections can be benign and self-limiting, but in others it may lead to severe sequelae for the individual or others. This article outlines the etiology and diagnosis of eosinophilia concentrating on helminth infections.

Publication types

  • Review

MeSH terms

  • Algorithms
  • Emigration and Immigration
  • Eosinophilia / diagnosis
  • Eosinophilia / etiology*
  • Eosinophilia / parasitology
  • Helminthiasis / complications*
  • Helminthiasis / diagnosis
  • Humans
  • Mass Screening / methods
  • Public Health
  • Travel*