Incidence of HIV-1 infection among adults in the Kagera region of Tanzania.
Int J Epidemiol
; 22(3): 528-36, 1993 Jun.
Article
em En
| MEDLINE
| ID: mdl-8359971
ABSTRACT
The results of a population-based follow-up study are presented. The baseline study which started in August 1987, was carried out to determine the prevalence of human immunodeficiency virus (HIV-1) infection in the Kagera region of Tanzania. A multistage cluster sampling technique was adopted in the selection of the study population. In the follow-up survey which started in June 1988, members of the same study population were revisited and studied in order to determine the incidence of HIV-1 infection among those who were HIV seronegative in the initial survey. HIV serology was conducted by using enzyme-linked immunosorbent assay and all positive sera were confirmed by the Western blot technique. A total population of 1316 adults aged 15-54 years was studied, constituting an average follow-up response rate of 69% in the rural areas and of 59% in the urban area. The overall incidence of HIV-1 infection among the adult population sample was 13.7 per 1000 person-years at risk with the highest incidence in the urban zone (47.5 per 1000 person-years at risk) and the lowest incidence in one of the three rural zones (4.9 per 1000 person-years at risk). The age-specific annual incidence was highest in the age group 25-34 years for males and in the age group 15-24 for females. From these results it was estimated that the number of newly infected adults in the region each year is about 8200 with a range between 5400 and 11,000 corresponding to the 95% confidence limits on the overall incidence.(ABSTRACT TRUNCATED AT 250 WORDS)
Palavras-chave
Africa; Africa South Of The Sahara; Age Factors; Demographic Factors; Developing Countries; Diseases; Eastern Africa; English Speaking Africa; Estimation Technics; Examinations And Diagnoses; Follow-up Studies; Hiv Infections; Hiv Serodiagnosis; Incidence; Laboratory Examinations And Diagnoses; Measurement; Population; Population Characteristics; Prevalence; Research Methodology; Rural Population; Sampling Studies; Sex Factors; Studies; Surveys; Tanzania; Urban Population; Validity; Viral Diseases
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Síndrome da Imunodeficiência Adquirida
/
HIV-1
/
Soropositividade para HIV
Tipo de estudo:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prevalence_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
/
Middle aged
País/Região como assunto:
Africa
Idioma:
En
Revista:
Int J Epidemiol
Ano de publicação:
1993
Tipo de documento:
Article
País de afiliação:
Tanzânia