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  • Title: Seroprevalence of hepatitis E antibodies in a population of recyclable waste pickers in Brazil.
    Author: Martins RM, Freitas NR, Kozlowski A, Reis NR, Lopes CL, Teles SA, Gardinali NR, Pinto MA.
    Journal: J Clin Virol; 2014 Mar; 59(3):188-91. PubMed ID: 24480723.
    Abstract:
    BACKGROUND: Hepatitis E virus (HEV) infection represents an important cause of acute viral hepatitis. Selective waste collection is a widespread activity carried out by the urban poor, and recyclable waste pickers have a lifestyle that makes this group highly vulnerable to unfavorable socio-economic and environmental factors. To date, the epidemiology of HEV infection in this population remains unknown. OBJECTIVES: To assess the seroprevalence of hepatitis E-specific antibodies in a population of recyclable waste pickers in Brazil. STUDY DESIGN: Between April 2010 and May 2011, a cross-sectional study was conducted among recyclable waste pickers from all 15 recycling cooperatives in Goiânia City, Central Brazil. The participants were tested for serological markers indicative of HEV infection. RESULTS: Of 432 individuals asked to participate in the survey, 431 (99.8%) agreed to participate. Twenty-four of 431 participants were anti-HEV IgG positive by ELISA. Of these, 22 were confirmed positive by immunoblot, resulting in an anti-HEV IgG prevalence of 5.1% (95% CI: 3.4-7.6). In addition, four individuals were anti-HEV IgM positive by ELISA. Of these, three (0.7%; 95% CI: 0.4-2.4) were confirmed anti-HEV IgM positive by immunoblot, but were HEV RNA negative. One was concurrently positive for anti-HEV IgG. Only age>40 years was independently associated with the presence of anti-HEV. CONCLUSIONS: These findings demonstrated that the prevalence of HEV antibodies among recyclable waste pickers in Central Brazil is relatively low and increased with age.
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