Geographic distribution of HTLV-I and identification of a new high-risk population
Int J Cancer
; 42(1): 7-12, July 15, 1988.
Artigo
em Inglês
| MedCarib
| ID: med-10043
Biblioteca responsável:
JM3.1
Localização: JM3.1; RC261.A34
ABSTRACT
Epidemiologic studies indicate that human T cell lymphotropic virus type I(HTLV-I), the causative agent of most cases of adult T-cell leukemia/lymphoma (ATLL)in Southeast Japan and the Caribbean islands and the probable cause of a progressive neurological disorder often referred to as tropical spastic paraparesis, occurs with unusual geographic clustering. The current large-scale serosurvey was undertaken to improve our understanding of HTLV-I prevalance in different parts of the world. We analyzed 43,445 serum samples collected from various geographic locales worldwide; 76 percent of these sera came from clinically healthy donors. Samples were initially screened by an enzyme-linked immunosorbent assay (ELISA) and 4,353 were further evaluated by means of competition assays. In this study, which did not include sera from endemic areas of Japan, a high prevalence of infection was observed in several countries in the Caribbean basin. A significant age-sex difference was observed between populations in the Caribbean and non-endemic regions of Japan. The reason for the male excess in non-endemic areas of Japan will require further study, while the female excess in the Caribbean basin is compatible with the previously described pattern for other HTLY-I-endemic areas. A newly recognized area of possible endemicity was southern Florida, where evidence of infection with HTLV-I or a related virus was found in a group of native Americans whose sera were collected in 1968. In certain parts of the world, particularly sub-Saharan Africa, important problems in determining specificity of reactivity occurred, probably because of cross-reacting antibodies. No pattern was detected that could explain the cross-reactivity solely on the basis of geographic areas, specific patterns of non-viral parasitic infection, or methods of handling the specimens. It is possible that these cross-reactivities are antibodies to proteins from HTLV-I-related retroviruses yet to be discovered. (AU)
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Coleções:
Bases de dados internacionais
Contexto em Saúde:
ODS3 - Saúde e Bem-Estar
Problema de saúde:
Meta 3.8 Atingir a cobertura universal de saúde
Base de dados:
MedCarib
Assunto principal:
Infecções por Deltaretrovirus
Tipo de estudo:
Estudo diagnóstico
/
Estudo de etiologia
/
Estudo prognóstico
/
Fatores de risco
Limite:
Adulto
/
Idoso
/
Feminino
/
Humanos
/
Masculino
País/Região como assunto:
África
/
América do Norte
/
Ásia
/
Caribe
Idioma:
Inglês
Revista:
Int J Cancer
Ano de publicação:
1988
Tipo de documento:
Artigo