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Secretary-General of the Nobel Assembly Thomas Perlmann speaks in front of a picture of Katalin Karikó and Drew Weissman, winners of the 2023 Nobel Prize in Physiology or Medicine, at the Karolinska Institute in Stockholm on Monday. JONATHAN NACKSTRAND/AFP via Getty Images hide caption

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JONATHAN NACKSTRAND/AFP via Getty Images

Nobel Prize goes to scientists who made mRNA COVID vaccines possible

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Experts say the new COVID boosters are a much closer match to currently circulating variants than prior vaccines and boosters. Frederick J. Brown/AFP via Getty Images hide caption

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Frederick J. Brown/AFP via Getty Images

The new COVID boosters are coming: Here's what you need to know

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Another round of COVID-19 vaccines is on the way. The Food and Drug Administration approved vaccines from Pfizer and Moderna that target an omicron subvariant called XBB.1.5. Vaccination campaigns, like this one in San Rafael, Calif., in 2022, could resume soon. Justin Sullivan/Getty Images hide caption

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Justin Sullivan/Getty Images

New COVID vaccines get FDA approval

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Even though the uptake of the omicron booster has been lackluster, federal officials have decided some adults can get a second shot. Scott Olson/Getty Images hide caption

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Scott Olson/Getty Images

Some adults can now get a second shot of the bivalent COVID-19 vaccine

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An older adult receives a COVID-19 vaccine at a temporary vaccination site on Dec. 7 in Chongqing, China. Concerns about effectiveness and safety have led to uncertainty about the COVID vaccine, notably among older citizens, whose vaccination rate is relatively low. He Penglei/China News Service via Getty Images hide caption

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He Penglei/China News Service via Getty Images

China's COVID vaccines: Do the jabs do the job?

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Bivalent COVID-19 vaccines are readied for use at a clinic in Richmond, Va., Nov. 2022. Just 15% of eligible Americans have gotten the most recent booster shot, according to the CDC. Steve Helber/AP hide caption

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Steve Helber/AP

It's not too late to get a COVID booster — especially for older adults

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Travelers at Shanghai Hongqiao Railway Station in Shanghai, China on Dec. 12. China's public health officials say up to 800 million people could be infected with the coronavirus over the next few months. Qilai Shen/Bloomberg via Getty Images hide caption

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Qilai Shen/Bloomberg via Getty Images

COVID spreading faster than ever in China. 800 million could be infected this winter

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The new COVID boosters rolling out this month represent a shift in strategy, said White House COVID-19 Response Coordinator Dr. Ashish Jha during a press briefing. The goal now will likely be to roll out new boosters annually. Anna Moneymaker/Getty Images hide caption

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Anna Moneymaker/Getty Images

The new COVID booster could be the last you'll need for a year, federal officials say

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Vials of the newly reformulated COVID-19 vaccine booster are being readied by Pfizer for distribution now that the Food and Drug Administration has authorized the shots for people 12 and older. Pfizer Inc. hide caption

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Pfizer Inc.

Patricia Neves (left) and Ana Paula Ano Bom helped launch a global project to revolutionize access to mRNA technology. Ian Cheibub for NPR hide caption

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Ian Cheibub for NPR

A kidney dish with syringes containing the Novavax COVID-19 vaccine sits in a refrigerator ready for use in February at a vaccination center in Prisdorf, Germany. Georg Wendt/AP hide caption

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Georg Wendt/AP

A child receives the Pfizer BioNTech COVID-19 vaccine at the Fairfax County Government Center in Annandale, Va., in November 2021. A committee of advisers to the Food and Drug Administration recommended Wednesday that the agency expand authorization of COVID-19 vaccines to children as young as 6-months-old. Chip Somodevilla/Getty Images hide caption

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Chip Somodevilla/Getty Images

Advisers to the FDA back COVID vaccines for the youngest children

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A case of COVID-19 brought 12-year-old Harry Nelson to the emergency room in Syracuse, N.Y., where cases are surging, His mother, photographer Paula Nelson, says he first had mild symptoms — just a headache — but later ran a high fever and began vomiting, which meant he couldn't keep down fever-relief meds. At the ER, he needed saline to rehydrate, Tylenol for his fever and meds to stop vomiting. Paula Nelson for NPR hide caption

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Paula Nelson for NPR

Rosy, 6, gives COVID tests and vaccines to her stuffed animals. She herself has been exposed to SARS-CoV-2, the coronavirus that causes COVID-19, multiple times and never tested positive. What's her secret? Michaeleen Doucleff/NPR hide caption

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Michaeleen Doucleff/NPR

Why hasn't my daughter caught COVID? 2 factors likely protect her — and maybe you too

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Young women wait to get vaccinated by Namra, a 21-year-old health worker who's part of a national door-to-door vaccination effort in the informal Hindubasti settlement in Karachi. Diaa Hadid/NPR hide caption

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Diaa Hadid/NPR

A health worker in Mexico City prepares a Sputnik V dose during a mass vaccination effort against COVID-19. A new study in Mexico shows that non-mRNA vaccines like the Russian version can be as effective as mRNA vaccines like Pfizer if the patient has previously been infected with SARS-CoV-2. Luis Barron/Eyepix Group/Barcroft Media via Getty Images hide caption

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Luis Barron/Eyepix Group/Barcroft Media via Getty Images

A Cuban industrial complex prepares to start production of one of the country's newly developed COVID vaccines. Yander Zamora/Pool/AFP via Getty Images hide caption

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Yander Zamora/Pool/AFP via Getty Images

With its new COVID-19 vaccine, Pfizer and BioNTech are hoping to get ahead of worsening effects of omicron as well as any new variants. Jonas Roosens/Belga Mag/AFP via Getty Images hide caption

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Jonas Roosens/Belga Mag/AFP via Getty Images