Tag Archives: Brazil

The clinical trial in Turkey was much smaller than those of other major vaccine candidates, making the researchers’ claims for it less certain. Turkish officials announced Thursday that a vaccine from the Chinese company Sinovac has an efficacy rate of 91.25 percent, but the finding was based on preliminary results …

RIO DE JANEIRO — The chaotic response to the coronavirus in Brazil, where it has killed more than 105,000 people, made the country’s experience a cautionary tale that many around the world have watched with alarm. But as the country’s caseload soared, vaccine researchers saw a unique opportunity. With sustained …