• Am. J. Trop. Med. Hyg. · May 2008

    Eosinophilia among returning travelers: a practical approach.

    • Eyal Meltzer, Ruth Percik, Joshua Shatzkes, Joshuah Shatzkes, Yehezkel Sidi, and Eli Schwartz.
    • Department of Medicine C, The Chaim Sheba Medical Center, Tel Hashomer, Israel. emeltzer@post.tau.ac.il
    • Am. J. Trop. Med. Hyg. 2008 May 1; 78 (5): 702-9.

    AbstractEosinophilia is not uncommon among returning travelers; however, the optimal diagnostic and therapeutic approach in travelers, as opposed to immigrants and refugees, is not clearly established. This was a retrospective case series. All returning travelers from developing countries presenting at the post-travel clinic with eosinophilia (>or= 500 cells/mcl) during 1994-2006 were evaluated. Data were compared with other referrals to the post-travel clinic and with a random sample of a pre-travel clinic. Of the 955 returning travelers evaluated during the study period, 82 (8.6%) had eosinophilia, and 44 (4.4%) were diagnosed with schistosomiasis. Another 38 (4.2%) cases presented with non-schistosomal eosinophilia (NSE), among whom a definite parasitologic diagnosis was achieved in only 23.7%. However, an empiric course of albendazole led to a clinical improvement in 90% of NSE cases. Helminthic disease probably accounts for the majority of cases of post-travel eosinophilia. Empiric albendazole therapy should be offered to undiagnosed NSE patients.

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