SAO PAULO, Brazil (AFP) — Pfizer gave the office of Brazil’s health regulators results of the tests of their Covid-19 vaccine, a necessary step to approve and register the vaccine, the US-based pharmaceutical said Wednesday. “This is an important step so that the vaccine can be available in Brazil,” Pfizer said in a statement in Portuguese. Brazil, with a population of 212 million, has the highest Covid-19 death rate in the world after the United […]