Good news from AstraZeneca

F.D.A. approval could change the global vaccine campaign, even if the U.S. doesn't need the shot.

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By Amelia Nierenberg

Writer, Briefings

AstraZeneca's strong showing

A U.S. trial of AstraZeneca's coronavirus vaccine found that it completely prevented the worst outcomes from Covid-19. No subjects in the trial reported serious safety issues.

More than 32,000 subjects participated in the trial, the largest yet for the AstraZeneca vaccine. Based on those results, it was 79 percent effective overall in preventing symptomatic infections. It also offered strong protection for older people, who had not been as well represented in earlier studies.

The company will soon seek approval from the Food and Drug Administration, even though the U.S. may not need the vaccine — doses are unlikely to become available before May, when federal officials predict there will be enough doses from the three vaccines that have already been authorized for all U.S. adults. But the results could help the vaccine recover from the safety scare it faced in Europe.

More than a dozen countries temporarily suspended the shot's use over concerns about possible rare blood complications. Global confidence wavered, even though only a handful of people out of millions inoculated had any serious side effects. In India, for example, where AstraZeneca's vaccine is one of two available, many people are currently skeptical of the shots as the country races to contain a second wave.

Alongside a public trust-building campaign from European officials, U.S. clearance would further burnish the shot's reputation, as the F.D.A.'s rigorous review process is considered the global gold standard. Because of its low cost and simple storage requirements, the AstraZeneca vaccine is the backbone of vaccine rollouts in many poor and middle-income countries.

"This is the vaccine that will likely vaccinate the world," Ashish Jha, the dean of the Brown University School of Public Health, wrote on Twitter on Monday, adding: "If you were rooting for global vaccination, this is a good morning."

The Covid-19 weight gain

If you've had to loosen your belt a few notches this year, you're not alone.

A new study suggests that adults under shelter-in-place orders gained more than half a pound every 10 days — that's nearly two pounds a month — which could easily translate to 20 pounds over the course of the year.

The study participants had mostly been losing pounds before the orders were issued, but their weights began rising steadily, in part because of dietary patterns that changed during stay-at-home orders. The restrictions also curtailed the humdrum physical activity that is part and parcel of daily living.

The study was relatively small, and its results are not generalizable. But because participants were losing weight beforehand, "it's reasonable to assume these individuals are more engaged with their health," the senior researcher on the study said. "That suggests we could be underestimating — that this is the tip of the iceberg."

If you want to move more, try an exercise snack. Here are five workouts that you can do in 10 minutes or fewer.

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Whet Moser edited today's newsletter.
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