Hepatitis B Vaccine Effectiveness in Community Health Workers

The cross-sectional study was conducted from July to December 2019 and the cohort from January to May 2020. In phase I, CHWs aged 18 years or older were included and those who were on vacation and/or leave on the scheduled dates were excluded. Therefore, of the 172 CHWs, 36 were on vacation or leave and were excluded from the study. The inclusion criteria for the cohort (phase II) were: CHWs who had three doses of the hepatitis B vaccine and anti-HBs titers <10 mIU/mL in the serological test. Individuals in this situation were eligible to receive the challenge dose¹².

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Amaral T.D., Alves C.M., Rezende F.R., Caetano K.A, & Tipple A.F. (2023). Serological and vaccine evaluation for hepatitis B among Community Health Workers. Revista Latino-Americana de Enfermagem, 31, e3765.

Publication 2023

Hepatitis b vaccine Serological test

Corresponding Organization :

Other organizations : Fundação de Amparo à Pesquisa do Estado da Bahia, Universidade Federal de Goiás

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Variable analysis

independent variables

Age of CHWs (18 years or older)

dependent variables

Presence of anti-HBs titers <10 mIU/mL in the serological test

control variables

CHWs who had three doses of the hepatitis B vaccine

controls

Positive control: CHWs who had three doses of the hepatitis B vaccine and anti-HBs titers <10 mIU/mL (eligible to receive the challenge dose)
Negative control: Not explicitly mentioned

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