Emergence of West African Human T-Lymphotropic Virus 1aC Subgroup, Brazilian Amazon

by | Jun 29, 2026 | Publications

Emerg Infect Dis. 2026 Jul;32(7):1207-1211. doi: 10.3201/eid3207.260372.

ABSTRACT

In a cross-sectional survey of 1,397 residents of Manaus, Brazil, we found a seroprevalence of 0.3% for human T-lymphotropic viruses (HTLVs) 1/2 and identified HTLV type 1aC by phylogenetic analysis. Those findings provide evidence of introduction of West African HTLV-1aC into the Brazilian Amazon and highlight regional limitations in genomic surveillance.

PMID:42365970 | DOI:10.3201/eid3207.260372

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