Limited male engagement in HIV prevention and care is a global challenge more pronounced in sub-Saharan Africa (SSA) contributing to ongoing transmission. However, peer network interventions show promise in improving engagement.

To map and synthesise evidence on peer network interventions for HIV prevention and care among men in SSA, with a focus on the types of strategies used, populations reached and how these interventions address cultural, social and structural barriers across the HIV care cascade.

Scoping review of peer-reviewed literature, conducted and reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews.

Community and facility-based HIV prevention and care settings across multiple countries in SSA.

Populations included men having sex with men, men in key occupational groups (fishermen, truck drivers), adolescents and young people, and men living with HIV. Studies not conducted in SSA, not peer-reviewed or not focused on male peer networks were excluded.

Peer network interventions included peer education, peer navigation, HIV self-testing (HIVST) distribution, adherence support groups, disclosure and stigma-reduction counselling, technology-enabled peer support (SMS and social media) and community-based antiretroviral therapy (ART) delivery. Intervention duration and intensity varied across studies.

Primary outcomes included HIV testing uptake, linkage to care, ART initiation, adherence, retention in care and viral suppression. Secondary outcomes included stigma reduction, disclosure and engagement among hard-to-reach male populations.

We conducted a review of literature published between November 2013 and November 2024, searching PubMed, Web of Science, Scopus and Cochrane databases. Studies were included if they examined peer network approaches in HIV prevention and care among men in SSA.

A total of 905 records were identified, of which 75 studies met the inclusion criteria. Peer network interventions were implemented across diverse SSA contexts and male populations. Strategies such as peer-led education, social diffusion models, HIVST distribution and technology-enabled peer support consistently improved HIV testing uptake, linkage to care, ART initiation and adherence. Contextually tailored interventions such as community-based outreach addressing occupational risk environments and economic vulnerabilities were particularly effective in engaging men traditionally underserved by facility-based services. However, challenges persisted, including variable linkage to care following HIVST and sensitivity to user costs.

Peer-led interventions in HIV care for men in SSA effectively address cultural, social and structural barriers, improving testing, ART adherence and viral suppression. Tailored, technology-enhanced and community-based approaches ensure equitable HIV prevention and treatment outcomes, despite challenges like linkage to care.

Among the five hepatitis viruses, the hepatitis B virus (HBV) is a major cause of serious acute and chronic liver infections worldwide. The major public health impact of HBV infection arises from chronic liver disease, including cirrhosis and hepatocellular carcinoma, which predominantly affects young and middle-aged adults of both sexes. Therefore, preventive interventions focusing on mothers and infants are critical due to vertical and early childhood transmission dynamics.

HBV prevalence largely varies among pregnant women in Ethiopia because of multiple interrelated factors. This umbrella review will consolidate all existing systematic reviews and create a more reliable picture of HBV infection and its determinants among pregnant women in Ethiopia.

This umbrella review will be conducted according to Preferred Reporting Items for Systematic reviews and Meta-Analyses reporting standards. The review will focus on identifying and integrating evidence from eligible systematic reviews and meta-analyses, with methodological quality appraised using the MeaSurement Tool to Assess systematic Reviews instrument. A comprehensive literature search strategy will be developed using relevant Medical Subject Headings alongside free-text keywords. Electronic searches will be conducted in PubMed/MEDLINE, African Journals Online, Web of Science, Scopus and Google Scholar. Statistical heterogeneity among the included reviews will be quantified using the I² statistic. Data management and meta-analytic procedures will be performed using STATA version 17, and effect estimates will be presented with corresponding 95% CIs to determine statistical precision.

This review uses only published or publicly available data, so ethics approval is not required. Findings will be disseminated via peer-reviewed publications, conference presentations and shared with policymakers, healthcare partners, clinicians and patients to inform policy, enhance education and guide future research.

PROSPERO (CRD420251118982).