Epidemiologic Surveillance in an academic hospital during the COVID-19 pandemic in Sao Paulo, Brazil: the key role of epidemiologic engagement in operational processes Izabel Marcilio; Anna Miethke-Morais; Leila Harima; Amanda C. Montal; Beatriz Perondi; Jose Ricardo de Carvalho Mesquita Ayres; Nelson Gouveia; Eloisa Bonfa; Hillegonda Maria Dutilh Novaes;