Barberán-Castro, J.Y., Albornoz-Zamora, E.J. and Maldonado-Mariño , E. 2025. Prevalence of COVID-19 among nursing staff at Carlos Andrade Marín Hospital, Ecuador, 2020–2021. Revista Arbitrada Interdisciplinaria de Ciencias de la Salud. Salud y Vida. 9, 1 (Aug. 2025), 257–263. DOI:https://doi.org/10.35381/s.v.v9i1.4665.