Capacity Building in Field Epidemiology in Sub Saharan Africa: Findings from Infectious Disease Field Epidemiology and Biostatistics in Africa (IDEA) Fellowship Program.

Background: Emerging and re-emerging infectious diseases (EREIDs) remain a major public health threat globally, particularly in sub-Saharan Africa (SSA), where fragile health systems, inadequate infrastructure, and limited workforce training exacerbate vulnerabilities. Uganda, a recognised hotspot for outbreaks, faces increasing risk due to anthropogenic and environmental drivers. To address critical capacity gaps, the Infectious Disease Epidemiology and Biostatistics in Africa (IDEA) Fellowship was launched as Uganda's first master's-level programme in infectious disease field epidemiology. Led by Busitema University, in collaboration with national and international partners, the programme was funded through EDCTP-II (CSA2020E).

Methods: The IDEA Fellowship combined theoretical instruction with fieldwork and research tailored to national health priorities. Activities included outbreak investigations, disease modelling, and surveillance, supported by Africa CDC, Uganda's Ministry of Health, and UK institutions. A REDCap-based survey was administered to 202 public health professionals across SSA to assess training needs, skill gaps, and barriers. Data were analysed using descriptive statistics and thematic analysis.

Results: The programme trained 15 master 's-level fellows, strengthening Uganda's capacity in surveillance, early detection, and outbreak response. Survey results showed that 55.4% of professionals required further training, with skill gaps in zoonotic disease management (64.4%), outbreak preparedness (64.9%), and data management (59.4%). Key barriers included limited diagnostic capacity (73.8%) and weak collaboration (49.5%). Qualitative findings highlighted inconsistent mentorship, restricted data access, and limited funding for fieldwork. Respondents advocated for structured mentorship, longer training durations (≥3-6 months), and hybrid delivery models (42.3%).

Conclusion: The IDEA Fellowship demonstrates a scalable model for infectious disease capacity building in SSA. Training African scientists in local contexts promotes relevance, retention, and cost-effectiveness. Regional expansion, cross-sector collaboration, and systemic investment are essential for sustainable epidemic preparedness and global health security.