A researcher for Brazil's state-run Fiocruz Institute holds a bat captured in the Atlantic Forest, at Pedra Branca state park, near Rio de Janeiro, Tuesday, Nov. 17, 2020. Researchers at the institute collect and study viruses present in wild animals ??" including bats, which many scientists believe were linked to the outbreak of COVID-19.??(AP Photo/Silvia Izquierdo), APTOPIX