A researcher works on the development of a vaccine against the new coronavirus COVID-19, in Belo Horizonte, state of Minas Gerais, Brazil, on March 26, 2020. - The Ministry of Health convened The Technological Vaccine Center of the Federal University of Minas Gerais laboratory to conduct research on the coronavirus COVID-19 in order to diagnose, test and develop a vaccine. (Photo by DOUGLAS MAGNO / AFP)