Pfizer says COVID-19 vaccine is looking 90% effective

AP News:

Pfizer said Monday that early results from its coronavirus vaccine suggest the shots may be a surprisingly robust 90% effective at preventing COVID-19, putting the company on track to apply later this month for emergency-use approval from the Food and Drug Administration.

The announcement, less than a week after an election seen as a referendum on President Donald Trump’s handling of the crisis, was a rare and major piece of encouraging news lately in the battle against the scourge that has killed more than 1.2 million people worldwide, including almost a quarter-million in the United States alone.

“We’re in a position potentially to be able to offer some hope,” Dr. Bill Gruber, Pfizer’s senior vice president of clinical development, told The Associated Press. “We’re very encouraged.”

Dr. Anthony Fauci, the U.S. government’s top-infectious disease expert, said the results suggesting 90% effectiveness are “just extraordinary,” adding: “Not very many people expected it would be as high as that.”

“It’s going to have a major impact on everything we do with respect to COVID,” Fauci said as Pfizer appeared to take the lead in the all-out global race by pharmaceutical companies and various countries to develop a well-tested vaccine against the virus.

Dr. Bruce Aylward, the World Health Organization’s senior adviser, said that the vaccine could “fundamentally change the direction of this crisis” by March, when the U.N. agency hopes to start vaccinating high-risk groups.

Still, Monday’s announcement doesn’t mean for certain that a vaccine is imminent: This interim analysis, from an independent data monitoring board, looked at 94 infections recorded so far in a study that has enrolled nearly 44,000 people in the U.S. and five other countries. Some participants got the vaccine, while others got dummy shots.

Pfizer Inc. cautioned that the protection rate might change by the time the study ends. Even revealing such early data is highly unusual.

Dr. Jesse Goodman of Georgetown University, former chief of the FDA’s vaccine division, called the partial results “extremely promising” but ticked off many questions still to be answered, including how long the vaccine’s effects last and whether it protects older people as well as younger ones.

Also, whenever a vaccine does arrive, initial supplies will be scarce and rationed, with priority likely to be given to health care workers and others on the front lines. Pfizer has estimated that 50 million doses of its two-shot vaccine could be available globally by the end of 2020, which could cover 25 million people.

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