Navigating the waves in Colombia: a cohort study of inpatient care during four COVID-19 waves David E. Rebellón-Sánchez; Tania M. Guzmán; Sarita Rodriguez; Julio Llanos-Torres; Daniela Vinueza; Eric Tafurt; Estefanía Beltrán; Álvaro Martínez; Fernando Rosso;

Efficacy of COVID-19 outbreak management in a skilled nursing facility based on serial testing for early detection and control Pedro M.M. Garibaldi; Natasha N. Ferreira; Glenda R. Moraes; José C. Moura; Danillo L.A. Espósito; Gustavo J. Volpe; Rodrigo T. Calado; Benedito A.L. Fonseca; Marcos C. Borges;

Frailty and health-related quality of life among older people living with HIV pre- and post-COVID-19 pandemic onset: A cross-sectional study Thiago S. Torres; Jovanice S. Jesus; Daniel Arabe; Lusiele Guaraldo; Fabião A. Meque; Flavia Serrao Lessa; Lívia Dumont Facchinetti; Rita Estrela; Valdilea G. Veloso; Beatriz Grinsztejn; Sandra W. Cardoso;