COVID-19 booster drive is faltering in the US

Also, a new poll from The Associated Press-NORC Center for Public Affairs Research found that Americans are more likely to see the initial vaccinations — rather than a booster — as essential.

"It's clear that the booster effort is falling short," said Jason Schwartz, a vaccine policy expert at Yale University.

Overall, the U.S. vaccination campaign has been sluggish. More than 13 months after it began, just 63% of Americans, or 210 million people, are fully vaccinated with the initial rounds of shots. Mandates that could raise those numbers have been hobbled by legal challenges.

Vaccination numbers are stagnant in states such as Wyoming, Idaho, Mississippi and Alabama, which have been hovering below 50%.

The U.S. and many other nations have been urging adults to get boosters because the vaccine's protection can wane. Also, research has shown that while the vaccines have proved less effective against omicron, boosters can rev up the body's defenses against the threat.

As for why an estimated 86 million Americans who have been fully vaccinated and are eligible for a booster have not yet gotten one, Schwartz said public confusion is one important reason.

"I think the evidence is now overwhelming that the booster is not simply an optional supplement, but it is a foundational part of protection," he said. "But clearly that message has been lost."

The need for all Americans to get boosters initially was debated by scientists, and at first the government recommended only that certain groups of people, such as senior citizens, get additional doses. The arrival of omicron, and additional evidence about falling immunity, showed more clearly a widespread need for boosters.

But the message "has been lost in the sea of changing recommendations and guidance," Schwartz said.

The AP-NORC Center poll found that 59% of Americans think it is essential that receive a vaccine to fully participate in public life without feeling at risk of COVID-19 infection. Only 47% say the same about a booster shot.

Keller Anne Ruble, 32, of Denver, received her two doses of the Moderna vaccine but hasn't gotten her booster. She said she had a bad reaction to the second dose and was in bed for four days with a fever and flu-like symptoms.

"I believe in the power of vaccines, and I know that's going to protect me," said Ruble, the owner of a greeting card sending service. But the vaccine "just knocked me out completely and freaked me out about getting the booster."

She said she does plan to get the booster in the next few weeks and in the meantime wears an N95 mask and tries to stay home.

"I just don't want to get COVID in general," she said. "It does scare me."

Blake Hassler, 26, of Nashville, Tennessee, said he doesn't plan to get the booster. He received Pfizer's two doses last year after having a mild case of COVID-19 in 2020. He said he considers himself to be in a low-risk category.

"At this point, we need to focus on prevention of serious illness at the onset of symptoms rather than creating a new shot every six weeks and more divisive mandates," he said.

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AP writer Mike Stobbe in New York contributed to this report.