astrazeneca

AstraZeneca says that its COVID-19 vaccine is strongly effective even after counting additional illnesses in its disputed U.S. study. The announcement late Wednesday was the latest in an extraordinary public rift with American officials...

WASHINGTON (AP) — American federal health officials say results from a U.S. trial of AstraZeneca’s COVID-19 vaccine may have included “outdated information” and that could mean the company provided an incomplete view of efficacy data...