Mass vaccination succeeds in Brazil's small town: authorities (4)

Photo taken on May 31, 2021 shows the Butantan Institute building in Sao Paulo, Brazil. An unprecedented experiment in the world, carried out in Brazil's small town of Serrana, in Sao Paulo State, has succeeded in reducing new deaths from COVID-19 by 95 percent and controlling the pandemic after 75 percent of the adult population received two doses of Chinese company Sinovac's CoronaVac vaccine, local authorities said. (Photo by Rahel Patrasso/Xinhua)