AstraZeneca Insists Its COVID-19 Vaccine Provides a Strong Protection Against the Virus
AstraZeneca insisted that its COVID-19 vaccine provides strong protection even after counting additional illnesses in its U.S. study, as the drugmaker responded to concerns raised by American officials in an unusually public rebuke that threatened to further erode confidence in the shot.
In a late-night news release Wednesday, AstraZeneca said it had analyzed more data from that study and concluded the vaccine is 76% effective in preventing symptomatic COVID-19, instead of the 79% it had reported earlier in the week.
Some experts called the new analysis reassuring and said the updated details didn’t look substantially different from what was announced earlier. A peek at the full data won’t come for at least another few weeks, once the Food and Drug Administration begins its own stringent review. For now, it’s not clear if the new figures will be sufficient to repair the credibility of a vaccine that, despite being widely used in Britain, Europe, and other countries, has had a troubled rollout.
