China’s race to find covid vaccine first raises safety questions
China has the largest number of candidates in late-stage trials
And Chinese shots could be used by millions worldwide because President Xi Jinping has pledged to share successful ones overseas
Chinese companies have made a seemingly unstoppable push to the front of the race for a coronavirus vaccine. Yet their speedy ascent has been unhindered by common scientific setbacks being reported by Western rivals, raising questions about how stringently they are vetting and reporting potential safety issues.