Objective: To determine the prevalence of burnout syndrome and its associated factors amongnursing staff, physicians and resident physicians during the COVID-19 pandemic in a tertiary hospitalrepurposed for COVID-19 patient care. Materials and methods: A quantitative, cross-sectional andanalytical study was conducted using the Maslach Burnout Inventory (MBI) and a self-developedquestionnaire to evaluate sociodemographic, occupational and pandemic-related variables. Thestudy included 225 healthcare professionals: 93 nurses, 60 physicians and 72 resident physiciansworking in general surgery, internal medicine, obstetrics and gynecology, emergency, intensivecare unit (ICU), pediatrics and epidemiology services across morning, afternoon, evening and night shifts and compressed workweeks in a tertiary hospital in Veracruz, Mexico, which was converted into a COVID-19-designated hospital during...