Epidemiology of trachoma in bebedouro state of são paulo, brazil: Prevalence and risk factors

Expedito J A Luna, Norma H. Medina, Marcia B. Oliveira, Oswaldo M. De Barros, Alexandre Vranjac, Heloisa Helena B Melles, Sheila K West, Hugh R. Taylor

Research output: Contribution to journalArticle

Abstract

Luna E J A (Epidemiologic Surveillance Center, São Paulo State Health Department, São Paulo, Brazil), Medina N H, Oliveira MB, de Barros O M, Vranjac A, Melles H H B, West Sand Taylor HR. Epidemiology of trachoma in Bebedouro State of São Paulo, Brazil: Prevalence and risk factors. International Journal of Epidemiology 1991; 20: 169-177.Trachoma was considered to have been 'eradicated' from the state of São Paulo, Brazil, until 1982 when a number of new cases of trachoma were reported in preschool children in Bebedouro, a small town in northwestem São Paulo. A household survey was undertaken to assess the prevalence and epidemiological characteristics of trachoma.A total of 2939 people of all ages was examined having been selected from a two-stage probalilistic household sampling frame based on census data. Overall, 7.2% of the population had evidence of one or more signs of trachoma and 2.1% had inflammatory trachoma.Inflammatory trachoma was more common in children aged one to ten years, especially in the peripheral urban and rural areas, and was more common in boys. The presence of chlamydia was confirmed by direct fluorescent antibody cytology. No cases of blindness due to trachoma were seen.A number of socioeconomic and hygiene variables were studied in order to determine the independent risk factors for trachoma in a household. Variables significantly associated with the occurrence of trachoma in the household were the number of children in the house aged one to ten years, the 'per capita' water consumption, the frequency of garbage collections, source of water, and the educational level of the head of household. Clustering of trachoma in different parts of this community was entirely explained by the concentration of households with these characteristics.

Original languageEnglish (US)
Pages (from-to)169-177
Number of pages9
JournalInternational Journal of Epidemiology
Volume21
Issue number1
DOIs
StatePublished - Feb 1992

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Trachoma
Epidemiology
Risk Factors
Cytology
Antibodies
Water
Garbage Collection
Sand
Census
Health
Sampling
Antibody
Surveillance
Clustering
Brazil
Children
Brazil factor
Household
Risk factors
Epidemiological Monitoring

ASJC Scopus subject areas

  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Physiology (medical)
  • Reproductive Medicine
  • Obstetrics and Gynecology
  • Epidemiology

Cite this

Luna, E. J. A., Medina, N. H., Oliveira, M. B., De Barros, O. M., Vranjac, A., Melles, H. H. B., ... Taylor, H. R. (1992). Epidemiology of trachoma in bebedouro state of são paulo, brazil: Prevalence and risk factors. International Journal of Epidemiology, 21(1), 169-177. https://doi.org/10.1093/ije/21.1.169

Epidemiology of trachoma in bebedouro state of são paulo, brazil : Prevalence and risk factors. / Luna, Expedito J A; Medina, Norma H.; Oliveira, Marcia B.; De Barros, Oswaldo M.; Vranjac, Alexandre; Melles, Heloisa Helena B; West, Sheila K; Taylor, Hugh R.

In: International Journal of Epidemiology, Vol. 21, No. 1, 02.1992, p. 169-177.

Research output: Contribution to journalArticle

Luna, EJA, Medina, NH, Oliveira, MB, De Barros, OM, Vranjac, A, Melles, HHB, West, SK & Taylor, HR 1992, 'Epidemiology of trachoma in bebedouro state of são paulo, brazil: Prevalence and risk factors', International Journal of Epidemiology, vol. 21, no. 1, pp. 169-177. https://doi.org/10.1093/ije/21.1.169
Luna, Expedito J A ; Medina, Norma H. ; Oliveira, Marcia B. ; De Barros, Oswaldo M. ; Vranjac, Alexandre ; Melles, Heloisa Helena B ; West, Sheila K ; Taylor, Hugh R. / Epidemiology of trachoma in bebedouro state of são paulo, brazil : Prevalence and risk factors. In: International Journal of Epidemiology. 1992 ; Vol. 21, No. 1. pp. 169-177.
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abstract = "Luna E J A (Epidemiologic Surveillance Center, S{\~a}o Paulo State Health Department, S{\~a}o Paulo, Brazil), Medina N H, Oliveira MB, de Barros O M, Vranjac A, Melles H H B, West Sand Taylor HR. Epidemiology of trachoma in Bebedouro State of S{\~a}o Paulo, Brazil: Prevalence and risk factors. International Journal of Epidemiology 1991; 20: 169-177.Trachoma was considered to have been 'eradicated' from the state of S{\~a}o Paulo, Brazil, until 1982 when a number of new cases of trachoma were reported in preschool children in Bebedouro, a small town in northwestem S{\~a}o Paulo. A household survey was undertaken to assess the prevalence and epidemiological characteristics of trachoma.A total of 2939 people of all ages was examined having been selected from a two-stage probalilistic household sampling frame based on census data. Overall, 7.2{\%} of the population had evidence of one or more signs of trachoma and 2.1{\%} had inflammatory trachoma.Inflammatory trachoma was more common in children aged one to ten years, especially in the peripheral urban and rural areas, and was more common in boys. The presence of chlamydia was confirmed by direct fluorescent antibody cytology. No cases of blindness due to trachoma were seen.A number of socioeconomic and hygiene variables were studied in order to determine the independent risk factors for trachoma in a household. Variables significantly associated with the occurrence of trachoma in the household were the number of children in the house aged one to ten years, the 'per capita' water consumption, the frequency of garbage collections, source of water, and the educational level of the head of household. Clustering of trachoma in different parts of this community was entirely explained by the concentration of households with these characteristics.",
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