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  • Title: Eosinophilia among returning travelers: a practical approach.
    Author: Meltzer E, Percik R, Shatzkes J, Sidi Y, Schwartz E.
    Journal: Am J Trop Med Hyg; 2008 May; 78(5):702-9. PubMed ID: 18458300.
    Abstract:
    Eosinophilia 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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