Key Social Norms Take-aways The study highlights how collective community norms — especially informal surveillance and shared social responsibility — play a key role in delaying adolescent sexual behavior. In Adidome, strong communal norms and active neighborhood monitoring contributed to lower HIV rates, while in Somanya, weakened cultural practices and lower community cohesion were linked to higher adolescent HIV prevalence. Programs aiming to prevent early sexual initiation and reduce HIV risk must consider how social norms operate at both family and community levels. Revitalizing collective accountability, promoting cultural frameworks that delay sexual initiation, and addressing structural disadvantages like poverty and migration are essential.

Objectives To explore why adolescent HIV infection is higher in Somanya than in Adidome, Ghana, despite the communities being socio-demographically similar, and to examine the different social control mechanisms used to regulate adolescent sexual initiation.

Methods The study used qualitative methods, conducting four focus group discussions (FGDs) with 45 parents and caregivers in both towns. These FGDs explored beliefs about adolescent sexual behavior, community involvement, and existing control mechanisms. Data were thematically analyzed.

Results In Adidome, adolescent sexual behavior was regulated through a combination of parental guidance, neighborhood monitoring, and community-enforced informal rules. These practices fostered collective responsibility and early intervention. In contrast, Somanya relied more on individual parental monitoring, which was weakened by social challenges like high rates of widowhood, migration, and the breakdown of traditional rites like dipo. Parents in Somanya felt less empowered to intervene in the lives of others’ children, and adolescents had greater access to unsupervised entertainment venues associated with risky behavior. These differences contributed to higher HIV rates in Somanya.

Conclusions Community-level approaches that involve shared monitoring and culturally relevant socialization are more effective in regulating adolescent sexual behavior. In places like Somanya, where these mechanisms have weakened, HIV prevention efforts should incorporate community-building strategies, strengthen informal rules, and revive or adapt culturally appropriate rites that delay sexual initiation.