The drug maker AstraZeneca announced on Monday that an early analysis of its late-stage clinical trials in Britain and Brazil showed that its coronavirus vaccine was 90 percent effective when […]
Clinical trials
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Back to news homeHow the Out-of-Control Pandemic Is Speeding the Hunt for Vaccines
The coronavirus is spreading out of control in the United States, overwhelming health systems and killing more than 1,100 Americans a day. But there is a slender silver lining: It […]