What question did this study set out to answer?

The aim is to evaluate the knowledge, perceptions, and preventive practices regarding Hepatitis B among young adults in Lagos Island.

March 28, 2026Open Access

Knowledge perception and preventive practices of Hepatitis B infection among young adults in Lagos Island Local Government Area, Lagos, Nigeria: a cross-sectional study

Key Points

The aim is to evaluate the knowledge, perceptions, and preventive practices regarding Hepatitis B among young adults in Lagos Island.
Descriptive cross-sectional study design
Survey of 371 young adults aged 18–35
Multistage random sampling technique
Use of structured, interviewer-administered questionnaire
Data analysis using Epi Info 7.1 with descriptive statistics and chi-square tests
74.7% of respondents had heard of Hepatitis B
69% demonstrated good knowledge, with gaps in transmission and complications
96.8% exhibited positive perceptions such as willingness to be vaccinated or screened
Only 20.2% had been vaccinated and 30.3% had undergone screening
Significant associations found between education level, knowledge, perception, and preventive practices

Abstract

Abstract Objective This study aimed to assess the knowledge, perception, and preventive practices of Hepatitis B virus (HBV) infection among young adults in Lagos Island Local Government Area, Lagos, Nigeria. Methods A descriptive cross-sectional study was conducted among 371 young adults aged 18–35 years residing in Lagos Island Local Government Area. Participants were selected using a multistage random sampling technique. Data were collected using a structured, interviewer-administered questionnaire that assessed socio-demographic information, HBV-related knowledge, perception, and preventive practices. Data were analyzed using Epi Info 7.1, with descriptive statistics and chi-square tests applied to determine associations between variables. A p-value of < 0.05 was considered statistically significant. Results Among respondents, 74.7% had heard of Hepatitis B, and 69% demonstrated good knowledge, although gaps remained concerning modes of transmission and complications. While 96.8% exhibited positive perceptions, such as willingness to be vaccinated or screened, actual preventive behavior was suboptimal: only 20.2% had been vaccinated, and 30.3% had undergone screening. Education level was significantly associated with knowledge, perception and preventive practices ( p = 0.001). Additionally, knowledge was significantly associated with both perception and preventive practices ( p < 0.05). Barriers to preventive action included lack of awareness, time constraints, and limited access to vaccination services. Conclusion The study revealed that although awareness of Hepatitis B infection is high among young adults in Lagos Island, significant gaps remain in accurate knowledge and consistent preventive behavior. These findings contribute valuable insights for designing targeted, culturally grounded public health interventions aimed at improving Hepatitis B prevention among urban youth in Nigeria.

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