Detection of HTLV‐I and HTLV‐II infection in Africans using type‐specific envelope peptides

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Abstract
Antibodies to HTLV were determined in 4,630 black African individuals from Zaire, Ghana and South Africa; 185 (4%) were confirmed as seropositive. Seroprevalance was 0.2% in a group of South African women, 0.9% among Ghanaian refugees in Belgium and from less than 1% to over 15% in various sites and populations in Zaire. With the use of HTLV-I and HTLV-II type-specific envelope peptides, 93% of confirmed HTLV seropositives were classified as HTLV-I. Five persons from the Haut Zaire region had HTLV-II serological reactivities, suggesting the presence of HTLV-II or a related retrovirus in central Africa. A cluster of HTLV-I-like indeterminate western blot patterns lacking anti-p24 antibody was found in Bas Zaire.