Community health workers (CHWs) play a crucial role in rural areas of Kenya for HIV/AIDS prevention and care. A mixed-methods approach including surveys, focus groups, and observational assessments were conducted among participants and community members to measure changes in HIV/AIDS awareness and testing uptake. CHWs facilitated a significant increase (p < 0.05) of 34% in HIV-positive case detection within two years compared to baseline levels, with CHWs reaching approximately 78% of targeted households. The programme's effectiveness is attributed to the tailored approach and consistent engagement by CHWs in delivering evidence-based interventions. Continuous training for CHWs and sustained community support are recommended to maintain high service delivery standards. HIV/AIDS, Community Health Workers, Rural Kenya, Case Detection, Knowledge Spread Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.