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Human T-lymphotropic virus type 1 (HTLV-1) and HTLV-2 are prevalent at low levels among US blood donors, but recent data on their prevalence is lacking. METHODS. Data on all first-time blood donors in a large network of US blood centers were examined during 2000-2009. HTLV-1 and HTLV-2 antibodies were measured by enzyme immunoassay (EIA) with confirmation by immunofluorescence or recombinant immunoblot. Prevalence rates were calculated, and odds ratios were assessed using multivariable logistic regression.

the journal of infectious diseases (online. university of chicago press)/the journal of infectious diseases

Seroprevalence and Demographic Determinants of Human T-Lymphotropic Virus Type 1 and 2 Infections Among First-Time Blood Donors--United States, 2000-2009