TABLE 1.

Specimen identification, geographic anddemographic data, and clinical status of HTLV-1-infected individuals from northern,western, central, and austral African countries^a

^aProvided are the HTLV-1 subtype and subgroup confirmed by phylogenetic analysis and new LTR and env African sequences characterized in this study. Abbreviations: AC, asymptomatic carrier; ATL, adult T-cell leukemia; TSP/HAM, tropical spastic paraparesis/HTLV-1-associated myelopathy; a-NA, a-WA, a-Sen, and a-TC, North African, West African, Senegalese, and transcontinental clades of the a subtype, respectively.