Prevalence and risk factors associated with Helicobacter pylori infection in native populations from Brazilian Western Amazon.
Trans R Soc Trop Med Hyg
; 97(4): 382-6, 2003.
Article
em En
| MEDLINE
| ID: mdl-15259462
ABSTRACT
We evaluated the prevalence of, and factors associated with, Helicobacter pylori infection in 222 subjects from 3 distinct communities of native populations (Uru-Eu-Wau-Wau Indians and 2 riverine communities living on the banks of the Machado river and in Portuchuelo) living in isolation in the rainforest of Brazilian Western Amazon. The overall prevalence was 78.8% (95% CI 72.7-83.9). The prevalence was higher in the Machado river community compared with Portuchuelo (chi2 = 3.84, P = 0.05), but no significant difference was observed between the Machado river community and the Uru-Eu-Wau-Wau Indians. Logistic regression showed that residential crowding and age were factors associated with the presence of H. pylori infection. Acquisition of the bacterium started early in life and by the age of 2 years 50% of children were infected. The prevalence increased with age, reaching near universal levels during adulthood (97.9%). Residential crowding was high with a global index of 3.3 persons/room (SD = 1.8), varying significantly between the 3 communities (P = 0.001). These data provide further evidence supporting direct person-to-person spread of the bacterium.
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Base de dados:
MEDLINE
Assunto principal:
Helicobacter pylori
/
Infecções por Helicobacter
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
/
Prevalence_studies
/
Risk_factors_studies
Limite:
Adolescent
/
Adult
/
Aged
/
Aged80
/
Child
/
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
País como assunto:
America do sul
/
Brasil
Idioma:
En
Ano de publicação:
2003
Tipo de documento:
Article