Ocugen hits another snag in bringing its Bharat Biotech-partnered Covid-19 vaccine to the US

Back in July, Ocugen and Bharat Biotech unveiled some Phase III data suggesting their Covid-19 vaccine, Covaxin, was 77.8% effective at preventing overall disease in India. They’re now looking to launch an immuno-bridging study to see if those numbers hold up in the US — but on Friday, the FDA said not so fast.