Prevalence of human herpesvirus 6 antibody among isolated Amazonian Amerindian communities in Brazil

• Autor(a) principal: Freitas, Ronaldo Barros de
• Data de Publicação: 1994
• Outros Autores: Linhares, Maria I. Siqueira, Linhares, Alexandre da Costa
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Digital do Instituto Evandro Chagas (Patuá)
• Texto Completo: https://patua.iec.gov.br/handle/iec/2616
• topic: Herpesvirus Humano 6 / imunologia; Anticorpos; Infecções por Herpesviridae / etnologia; Região Amazônica (BR); População Indígena; Tribo Tiriyo (AM); Tribo Mekranoiti (PA); Tribo Oyampi (AM); Tribo Tucano (AM)

Human herpesvirus 6 (HHV6) antibody was detected by the anticomplement immunofluorescence test in 65 of 592 serum samples (10.9%) obtained from Amerindians belonging to 4 remote communities inhabiting the Amazon Region of Brazil. Seropositivity rates ranged from 5.4% in the Oyampi to 14.9% in the Tucano. Among the Mekranoiti and Tiriyo, the seroprevalence rates were 12.5% and 11.8%, respectively. In children aged O-10 years, the prevalences of HHV6 antibody ranged from 5.2% to 24’2%, among the Oyampi and Mekranoiti tribes, respectively. In the 1 l-20 and >20 years old age groups, percentages of positivity ranged, in the former group, from 9.5% to 17.5% in the Oyampi and Tucano, respectively and, in the latter group, from 1.3% in the Oyampi to 14.8% in the Tucano. The prevalences of HHV6 antibody decreased regularly through the first 3 age-groups in the Mekranoiti and Tiriyo. In addition, frequencies of seropositivity were consistently higher in males than in females in the Mekranoiti (P<O.O5), Oyampi and Tiriyo tribes.