AstraZeneca Confirms Strong Vaccine Protection

AstraZeneca insisted Wednesday that its COVID-19 vaccine is strongly effective even after counting additional illnesses in its disputed U.S. study, the latest in an extraordinary public rift with American officials. In a late-night press release, AstraZeneca said it had recalculated data from that study and concluded the vaccine is 76% effective in preventing symptomatic COVID-19, instead of the 79% it had claimed earlier in the week. Just a day earlier, an independent panel that oversees the study had accused AstraZeneca of cherry-picking data to tout the protection offered by its vaccine. The panel, in a harsh letter to the company and to U.S. health leaders, said the company had left out some COVID-19 cases that occurred in the study, a move that could erode trust in the science.