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US advisers endorse single-shot Covid vaccine from J&J


US advisers endorse single-shot Covid vaccine from J&J

U.S. health advisers endorsed a one-dose Covid-19 vaccine from Johnson & Johnson on Friday (Feb 26), putting the nation on the cusp of adding an easier-to-use option to fight the pandemic.

The acting head of the Food and Drug Administration said in a statement that the agency will move quickly to follow the recommendation, which would make J&J’s shot the third vaccine authorized for emergency use in the U.S. Vaccinations are picking up speed, but new supplies are urgently needed to stay ahead of a mutating virus that has killed more than 500,000 Americans.

After daylong discussions, the FDA panelists voted unanimously that the benefits of the vaccine outweighed the risks for adults. Once FDA issues a final decision, shipments of a few million doses could begin as early as Monday.

“There’s an urgency to get this done,” said Dr. Jay Portnoy of Children’s Mercy Hospital in Kansas City, Missouri. “We’re in a race between the virus mutating – and new variants coming out that can cause further disease – and stopping it.”

More than 47 million people in the U.S., or 14% of the population, have received at least one shot of the two-dose vaccines from Pfizer and Moderna, which FDA authorized in December. But the pace of vaccinations has been strained by limited supplies and delays due to winter storms.

While early J&J supplies will be small, the company has said it can deliver 20 million doses by the end of March and a total of 100 million by the end of June.

J&J’s vaccine protects against the worst effects of Covid-19 after one shot, and it can be stored up to three months at refrigerator temperatures, making it easier to handle than the previous vaccines, which must be frozen.

One challenge in rolling out the new vaccine will be explaining how protective the J&J shot is after the astounding success of the first U.S. vaccines.

“It’s important that people do not think that one vaccine is better than another,” said panelist Dr. Cody Meissner of Tufts University.

The two-dose Pfizer and Moderna shots were found to be about 95% effective against symptomatic Covid-19. The numbers from J&J’s study are not that high, but it’s not an apples-to-apples comparison. One dose of the J&J vaccine was 85% protective against the most severe Covid-19. After adding in moderate cases, the total effectiveness dropped to about 66%.

(Compiled)

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