Robertis Colmenares, M.C., Patricia Rodríguez, A.P. and Gotera Zambrano, J.L. 2025. Prevalence of cases of positive antigen against SARS-COV-2 in patients treated in a clinical laboratory in the Maracaibo municipality, period 2020-2021. Kasmera. 53, (Dec. 2025), e5342770. DOI:https://doi.org/10.56903/kasmera.5342770.