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From the Tropical Disease Unit, Division of Infectious Diseases, Department of Medicine (Lim, Keystone, Kain), University of Toronto, Toronto General Hospital University Health Network (Lim, Katz, Keystone, Kain); the McLaughlin Rotman Centre for Global Health, University of Toronto (Kain); and the Division of Infectious Diseases, St. Joseph's Health Centre (Krajden, Fuksa), Toronto, Ont.
Correspondence to: Dr. Kevin C. Kain, Tropical Disease Unit, ES 9-412, Toronto General Hospital, 200 Elizabeth St., Toronto ON M5G 2C4
Abstract
STRONGYLOIDIASIS, WHICH IS CAUSED by the nematode Strongyloides stercoralis, is a common and persistent infection, particularly in developing countries. In the setting of compromised cellular immunity, it can result in fulminant dissemination with case-fatality rates of over 70%. The majority of new Canadian immigrants come from countries where Strongyloides is highly endemic; therefore, the burden of Strongyloides may be underappreciated in Canada. Because early diagnosis and therapy can have a marked impact on disease outcome, screening for this infection should be considered mandatory for patients who have a history of travel or residence in a disease-endemic area and risk factors for disseminated disease (e.g., corticosteroid use and human T-lymphotropic virus type I infection).
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