Background <p>Hepatitis B virus (HBV) infection remains a major public health challenge in sub-Saharan Africa despite the availability of a safe and effective vaccine. In Nigeria, adult vaccination coverage and completion rates are not well characterized within hospital-based populations.</p> Methods <p>A hospital-based cross-sectional study was conducted among 1,200 adults attending Federal Medical Centre (FMC) Keffi, Nasarawa State, Nigeria. Data on socio-demographics, HBV-related knowledge, attitudes, perceived barriers, vaccination uptake, and completion were collected using a structured questionnaire. Knowledge and attitude scores were categorized into poor, fair, and good levels. Associations between socio-demographic characteristics and vaccination uptake were examined using chi-square and Fisher’s exact tests, with statistical significance set at <i>p</i> &lt; 0.05.</p> Results <p>The mean age of respondents was predominantly 36–40 years (32.5%), with males constituting 72.3%. Most respondents had tertiary education (91.8%) and were civil servants (83.4%). Overall awareness of HBV was high (95.5%), with a mean knowledge score of 12.37 ± 1.42. Good knowledge was observed in 74.2% of respondents, while 57.2% demonstrated good attitudes toward HBV prevention. Vaccination uptake was high, with 93.5% reporting receipt of at least one vaccine dose. However, only 22.3% had completed the recommended three-dose schedule, while 48.2% and 23.1% had received one and two doses, respectively. Willingness to complete vaccination was reported by 81.6% of respondents. Perceived barriers included high vaccine cost (72.4%), inadequate access to health facilities (96.9%), fear of side effects (71.9%), and insufficient information (73.5%). No significant associations were found between socio-demographic variables and vaccination uptake (<i>p</i> &gt; 0.05 for all).</p> Conclusion <p>Despite high HBV vaccination initiation and knowledge levels, substantial gaps in vaccine completion persist. Addressing financial, informational, and access-related barriers is essential to improve full vaccination coverage among Nigerian adults.</p>

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Self-reported hepatitis B vaccination uptake and associated factors among adults in a tertiary hospital, Nasarawa State, Nigeria

  • Stephen Olaide Aremu,
  • Adamu Ishaku Akyala,
  • Yakubu Boyi Ngwai,
  • Abdillahi Abdi Barkhadle

摘要

Background

Hepatitis B virus (HBV) infection remains a major public health challenge in sub-Saharan Africa despite the availability of a safe and effective vaccine. In Nigeria, adult vaccination coverage and completion rates are not well characterized within hospital-based populations.

Methods

A hospital-based cross-sectional study was conducted among 1,200 adults attending Federal Medical Centre (FMC) Keffi, Nasarawa State, Nigeria. Data on socio-demographics, HBV-related knowledge, attitudes, perceived barriers, vaccination uptake, and completion were collected using a structured questionnaire. Knowledge and attitude scores were categorized into poor, fair, and good levels. Associations between socio-demographic characteristics and vaccination uptake were examined using chi-square and Fisher’s exact tests, with statistical significance set at p < 0.05.

Results

The mean age of respondents was predominantly 36–40 years (32.5%), with males constituting 72.3%. Most respondents had tertiary education (91.8%) and were civil servants (83.4%). Overall awareness of HBV was high (95.5%), with a mean knowledge score of 12.37 ± 1.42. Good knowledge was observed in 74.2% of respondents, while 57.2% demonstrated good attitudes toward HBV prevention. Vaccination uptake was high, with 93.5% reporting receipt of at least one vaccine dose. However, only 22.3% had completed the recommended three-dose schedule, while 48.2% and 23.1% had received one and two doses, respectively. Willingness to complete vaccination was reported by 81.6% of respondents. Perceived barriers included high vaccine cost (72.4%), inadequate access to health facilities (96.9%), fear of side effects (71.9%), and insufficient information (73.5%). No significant associations were found between socio-demographic variables and vaccination uptake (p > 0.05 for all).

Conclusion

Despite high HBV vaccination initiation and knowledge levels, substantial gaps in vaccine completion persist. Addressing financial, informational, and access-related barriers is essential to improve full vaccination coverage among Nigerian adults.