Seroprevalence of Anti-Sars-Cov-2 Antibodies among Patients Visiting Hospital-Based Sentinel Sites in the Rift Valley Region, Kenya: DOI: https://dx.doi.org/10.4314/ajhs.v38i1.2. African Journal of Health Sciences, [S. l.], v. 38, n. 1, 2025. Disponível em: https://ojs.ajhsjournal.or.ke/index.php/home/article/view/464. Acesso em: 19 apr. 2026.