Covid-19 pandemic in the state of Piauí (Brazil): reported cases, deaths and bed occupancy - Costa Filho, Antonio Alberto Ibiapina; Oliveira, Naila Albertina de; Próspero, Deyna Francélia Andrade; Guimarães, Mayla R; Ibiapina, Aline Raquel de Sousa; Rabi, José Antonio (Brazilian Journal of Health and Biomedical Sciences - BJHBS, 2022)