Decrease in hepatitis B prevalence among blood donors in Central-West Brazil

  • Lindenberg A
  • Motta-Castro A
  • Puga M
  • et al.
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Abstract

BACKGROUND: The aim of the present study was to estimate hepatitis B virus seroprevalence among first-time blood donors in the city of Campo Grande, Mato Grosso do Sul State, in the central-western region of Brazil.FINDINGS: A retrospective analysis of first-time voluntary blood donor records, from January 2010 to December 2010, was conducted at the Hematology Center of Mato Grosso do Sul. The prevalence of the HBsAg and anti-HBc serological markers and their respective 95% confidence intervals were calculated. Chi-square analysis was performed between the seroprevalence previously found in 2001 and the one determined by the current study. Results were considered statistically significant if p < 0.05. Among 8,840 subjects, 269 (3.04%, 95% CI: 2.7-3.4) were positive for HBV markers. The prevalence rate of HBsAg was 0.19% (95% CI: 0.1-0.3) and anti-HBc alone was 2.85% (95% CI: 2.5-3.2).CONCLUSIONS: There was no statistically significant difference regarding gender. However, an important association was observed between HBV infection and older age (p < 0.01). The seroprevalence of HBV infection in first-time blood donors diminished from 2001 to 2010 (p < 0.01). Such decrease suggests an improvement in the recruitment of safe donors, the positive impact of vaccination programs and the decreasing of HBV infection prevalence in the general population.

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Lindenberg, A. de S. C., Motta-Castro, A. R. C., Puga, M. A., Ortiz Tanaka, T. S., Torres, M. S., Fernandes-Fitts, S. M., & Cunha, R. V. (2013). Decrease in hepatitis B prevalence among blood donors in Central-West Brazil. Journal of Venomous Animals and Toxins Including Tropical Diseases, 19(1), 7. https://doi.org/10.1186/1678-9199-19-7

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