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Origin and prevalence of human T-lymphotropic virus type 1 (HTLV-1) and type 2 (HTLV-2) among indigenous populations in the Americas

Paiva, Arthur ; Casseb, Jorge

Revista do Instituto de Medicina Tropical de São Paulo, 2015-01, Vol.57 (1), p.1-14 [Periódico revisado por pares]

Brazil: Instituto de Medicina Tropical de Sao Paulo

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  • Título:
    Origin and prevalence of human T-lymphotropic virus type 1 (HTLV-1) and type 2 (HTLV-2) among indigenous populations in the Americas
  • Autor: Paiva, Arthur ; Casseb, Jorge
  • Assuntos: American Native Continental Ancestry Group - statistics & numerical data ; Americas ; Americas - epidemiology ; Brazil - epidemiology ; HTLV-1 ; HTLV-2 ; HTLV-I Infections - epidemiology ; HTLV-II Infections - epidemiology ; Human Migration ; Human T-lymphotropic virus 1 ; Human T-lymphotropic virus 2 ; Humans ; Indians ; Origin ; Prevalence ; Review ; TROPICAL MEDICINE
  • É parte de: Revista do Instituto de Medicina Tropical de São Paulo, 2015-01, Vol.57 (1), p.1-14
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-3
    content type line 23
    ObjectType-Review-1
  • Descrição: Human T-lymphotropic virus type 1 (HTLV-1) is found in indigenous peoples of the Pacific Islands and the Americas, whereas type 2 (HTLV-2) is widely distributed among the indigenous peoples of the Americas, where it appears to be more prevalent than HTLV-1, and in some tribes of Central Africa. HTLV-2 is considered ancestral in the Americas and is transmitted to the general population and injection drug users from the indigenous population. In the Americas, HTLV-1 has more than one origin, being brought by immigrants in the Paleolithic period through the Bering Strait, through slave trade during the colonial period, and through Japanese immigration from the early 20th century, whereas HTLV-2 was only brought by immigrants through the Bering Strait. The endemicity of HTLV-2 among the indigenous people of Brazil makes the Brazilian Amazon the largest endemic area in the world for its occurrence. A review of HTLV-1 in all Brazilian tribes supports the African origin of HTLV-1 in Brazil. The risk of hyperendemicity in these epidemiologically closed populations and transmission to other populations reinforces the importance of public health interventions for HTLV control, including the recognition of the infection among reportable diseases and events.
  • Editor: Brazil: Instituto de Medicina Tropical de Sao Paulo
  • Idioma: Inglês;Português
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