coronavirus spread around the world. Now as Beijing develops a vaccine, the need for transparency is proving essential to win back trust.American drugmaker Pfizer Inc.
and German biotechnology firm BioNTech SE announced this week that its vaccine appears more than 90% effective in stopping Covid-19 infections.
The preliminary finding spurred a global stock rally and put the companies at the head of the pack in the race for the vaccine.At around the same time, China saw the final-stage trial of one of its top vaccine candidates halted in Brazil due to a serious adverse event.
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