Analysis of post vaccine hepatitis soroconversion in ribeirinhos in the municipality of Mocajuba, Pará, Brazil

Abstract

Objective: To evaluate the seroprevalence of anti-HBs antibodies in a riverside population of the São Pedro do Vizeu community, in the municipality of Mocajuba, Pará State, Brazil. Method: Field research, descriptive, exploratory, quantitative, cross-sectional, conducted with members of the 25 families living in the São Pedro do Vizeu Community, Mocajuba Municipality, Pará, between August 2018 and July 2019. Approximately 16 mL of blood was collected from each participant, and serological tests were performed by immunoenzymatic technique. Result: The study participants 133 individuals who presented the hepatitis B vaccination card, of which 61.7% had the anti-HBs+ marker isolated, demonstrating the profile of vaccine immunity for HBV. Conclusion: In the population studied, 38.3% took the vaccine, but did not have sufficient titration levels and are susceptible to infection. It was inferred that the vaccine, when used correctly, is the main tool capable of reducing the rates of confirmed cases and mortality.