Medicine

U.K. trials of the Oxford and AstraZeneca vaccine have resumed after a brief pause, yet key details of the events have not been released

Scientists urge caution in the global vaccine race as AstraZeneca reports an “adverse event” in a person who received the University of Oxford vaccine

After neutralizing SARS-CoV-2 in cell culture, scientists at the University of Costa Rica are proceeding with human testing

The Trump administration’s Operation Warp Speed program is backing six efforts with the ambitious goal of delivering an effective vaccine by January

Medical ethicist Ezekiel Emanuel discusses a framework for equitably allocating COVID-19 vaccines based on preventing premature deaths and mitigating long-term economic impacts

Vaccines and drugs drove a century of progress, but today’s contagions thrive on inequality

Despite calls for more rigorous clinical trials, the Food and Drug Administration has granted an emergency authorization for the therapy

Late-stage clinical trials of the first two coronavirus vaccine candidates in the U.S. plan to recruit 60,000 Americans

Originally published in February 1955

A preexisting drug could buy time for snakebite treatment

Teams are starting to test vaccines using messenger RNA or chimpanzee cold viruses to inoculate humans. Will their benefits last?

The decline seen in some studies is normal, experts say. But scientists must wait to see whether infection confers long-term protection