Visual Communication in Nigerian Public Health Campaigns: Design Effectiveness and Audience Reception

Public health communication in Nigeria relies heavily on visual media to reach diverse and often low-literacy populations with critical health information, making the design quality and cultural appropriateness of visual materials a significant determinant of campaign effectiveness. This study analyses the design effectiveness and audience reception of visual communication materials in public health campaigns conducted in Borno, Ogun, and Delta States between 2020 and 2024. A mixed-methods design is employed, combining content analysis of 200 campaign posters, banners, and digital graphics with structured audience reception surveys administered to 360 community members across the three states. The study evaluates design clarity, cultural symbol usage, colour appropriateness, typographic legibility, and the alignment of visual messages with intended health behaviours. The theoretical framework draws on health communication theory, visual rhetoric, and the cross-cultural design literature. The geographic diversity of the study sites, spanning North East, South West, and South South zones, enables examination of whether visual communication designed in central government agencies achieves comparable effectiveness in linguistically and culturally diverse communities. The study examines whether health campaign design integrates fine arts and graphic design expertise or is produced without professional design input. Recent literature on African public health communication has identified design quality as an undervalued determinant of message reception. Findings are intended for the Federal Ministry of Health, state health agencies, and communications design practitioners working in the health sector. Keywords: visual communication, public health campaigns, design effectiveness, audience reception, Nigeria