COVID-19 tracker: Fosun pivots to BioNTech's 2nd shot for Chinese nod; AstraZeneca on track for 2020 data reveal

AstraZeneca fell short of its target to supply the U.K. with 30 million vaccine doses by September, the country's vaccine taskforce chief, Kate Bingham, said. Meanwhile, Russia's Sputnik V vaccine has reportedly hit manufacturing and quality control challenges. Singapore's Breathonix said its COVID-19 breathalyzer achieved at least 90% accuracy in an ongoing pilot study. Becton Dickinson scored a deal to provide millions of rapid antigen tests to the Netherlands. And the FDA on Tuesday warned that antigen tests could yield false positives if users fail to follow instructions closely. The worldwide case count passed 47.6 million Wednesday afternoon, with more than 1.2 million reported deaths, according to Johns Hopkins University's COVID-19 dashboard.