Eduardo Simoes Additional News Today : Breaking News, Live Updates & Top Stories | Vimarsana

By Eduardo Simões SAO PAULO, Jan 12 (Reuters) - A coronavirus vaccine developed by China's Sinovac Biotech was just 50.4% effective at preventing symptomatic infections in a Brazilian trial, researchers said on Tuesday, barely enough for regulatory approval and well below the rate announced last week. The latest results are a major disappointment for Brazil, as the Chinese vaccine is one of two that the federal government has lined up to begin immunization during the second wave of the world's second-deadliest COVID-19 outbreak. Several scientists and observers blasted the Butantan biomedica...

路透新闻部 (Adds report on efficacy below 60%, Butantan says is speculation) SAO PAULO, Jan 11 (Reuters) - The coronavirus vaccine developed by China’s Sinovac Biotech showed a general efficacy of less than 60% in its late-stage trial in Brazil, a news website reported on Monday, citing two people who seen the results. Sao Paulo’s Butantan biomedical center, which partnered with Sinovac to test and produce the vaccine in Brazil, dismissed the report as “purely speculative” as it prepares to release a more complete set of results on Tuesday at 12:45 p.m. (1545 GMT). Medical expert...