The move applies to Americans over 65 who were vaccinated with Pfizer, and those at high Covid risk.

The FDA authorized a third, booster shot of Pfizer-BioNTech's COVID-19 vaccine—but only for certain populations, including the elderly.

Protection from Pfizer and Moderna's COVID-19 vaccines wanes over time, but not all experts think it's time for boosters yet.

The debate over whether Americans should receive a booster dose of the Pfizer/BioNTech COVID-19 vaccine moves to a panel of independent expert advisers to the U.S. Food and Drug Administration on Friday.

Moderna says the data provides evidence boosters could stop thousands of cases — but most "breakthrough" infections after its shot weren't severe.

After a third shot of Pfizer's vaccine, injection-site pain is most common side effect, followed by fatigue and headache.

As officials in the United States debate vaccine boosters and requirements, a CNN analysis of Johns Hopkins University (JHU) and US Census Bureau data shows about one in 500 residents has died of Covid-19.

Moderna said on Thursday it is developing a single vaccine that combines a booster dose against COVID-19 with its experimental flu shot. Conway G. Gittens reports.

Moderna Inc (MRNA.O) said on Friday it had asked the EU drugs regulator for conditional approval of a booster shot of its COVID-19 vaccine at a 50 microgram dose.

Top U.S. health officials have told the White House they would not have enough data for a broad COVID-19 booster rollout as President Joe Biden had anticipated, a source familiar with the discussions said on Friday.

Leading health officials told the White House they need more time to review booster data, The New York Times reported.

Advisers to the U.S. Food and Drug Administration are expected to discuss two key questions when they meet on Sept. 17 to consider a COVID-19 vaccine booster campaign this fall: Is protection from the initial shots waning, and will boosters help?

Moderna Inc (MRNA.O) on Wednesday asked the U.S. Food and Drug Administration (FDA) to allow the use of a third booster dose of its COVID-19 vaccine.

Walmart Inc (WMT.N) on Tuesday became the latest U.S. retailer to say that it is ready to administer millions of COVID-19 booster vaccine doses this fall if U.S. health officials endorse su…

The Czech government will offer a booster COVID-19 vaccine shot from Sept. 20 to any previously vaccinated person, Health Minister Adam Vojtech said on Monday.

These are Insider's biggest healthcare stories for the week ending August 27.

U.S. health regulators could approve a third COVID-19 shot for adults beginning at least six months after full vaccination, instead of the previously announced eight-month gap, the Wall Street Journal reported on Wednesday.

The findings could help inform the U.S. government's recommendations about booster shots for the 14 million people who received the single-shot Johnson & Johnson vaccine.

RT @joshtigerhill: Retweet if you are fully vaccinated with Pfizer or Moderna and you plan on getting the booster shot once you are eligibl…

RT @AntiWokeBrigad1: The clot shot strikes again. Pulmonary Embolism after the #Moderna #mRNA elasomeran imelasomeran booster. 27/04/23…

The clot shot strikes again. Pulmonary Embolism after the #Moderna #mRNA elasomeran imelasomeran booster. 27/04/23 https://t.co/Gw5xcNqzqy https://t.co/u7h0ezaZbR

RT @whispers_work: @ClareCraigPath 1st Moderna - Dad & uncle (both 87) severe shingles 2nd Moderna - Dad heart ablation 1st Booster - D…

RT @CathyC65174823: @CryptoAliB @CantTrust1990 @ClareCraigPath Moderna 4X higher than Pfizer? Might explain why I was deathly ill after the…

RT @angelanashtn: Dona McCarthy, California, RIP From her husband Pat: “My beautiful wife went and received the second Moderna booster sh…

RT @Whatchadoinpeep: @MakisMD I remember the J&J was one and done vax. It wasn’t mRNA like Pfizer or Moderna. After a while the FDA was say…

RT @Whatchadoinpeep: @MakisMD I remember the J&J was one and done vax. It wasn’t mRNA like Pfizer or Moderna. After a while the FDA was say…

In my country, most people take and preferred Moderna, Most of my family did and I myself take 3rd booster shot Pfizer. They are all fine. I just wonder if this news real or just propaganda of anti-vax? https://t.co/m8Bdg8LJzI https://t.co/5xyuLIL6sR

And yet, even MORE pushback. https://t.co/5khr3JCCdc

RT @angelanashtn: Dona McCarthy, California, RIP From her husband Pat: “My beautiful wife went and received the second Moderna booster sh…

How did people go with vaccine no. 4? I’m getting my booster tomorrow with my flu shot! Three Pfizer and fourth will be Moderna. I was massively on my deathbed with shot 2 & 3 - bit nervous!

RT @drseanmullen: The Novavax vaccine option couldn’t come soon enough. Of course, in the US it’s been restricted to those who’ve never had…

RT @Fictionalmuse1: @Dakota_150 Seconded. Pro-vax here, in fact, I couldn't wait to get my booster bc at the time everyone was saying that…

RT @TheRustler83: @ClareCraigPath Did anyone have ‘COVID’ Original Covid = Flu + H1N1 quadrivalent flu shot Alpha = Pfizer dose 1 Delta…

RT @Vax_injuries7: Kristen Della Bella broke out in painful, itchy hives after her Moderna booster in February of 2022. “There isn’t a doub…

RT @Vax_injuries7: Kristen Della Bella broke out in painful, itchy hives after her Moderna booster in February of 2022. “There isn’t a doub…

Kristen Della Bella broke out in painful, itchy hives after her Moderna booster in February of 2022. “There isn’t a doubt in my mind that this is a reaction from the shot. I’m in awful pain, itchy, and I’m embarrassed to go out because I look like a monster.” #CovidVaccines… https://t.co/T60lKu7Tcq https://t.co/lBBavzxT5J

Anita Levine: New York woman loses teeth after Moderna mRNA booster shot, blames “COVID mouth,” reveals epidemic of post-injection teeth damage https://t.co/rTkY84NaG0

My son got his booster shot today. But there seems to be a regional shortage of pediatric Moderna, which is why everyone kept canceling appointments. He still ended up with Pfizer, even though is isn't protocol.

Anita Levine: New York woman loses teeth after Moderna mRNA booster shot, blames “COVID mouth,” reveals epidemic of post-injection teeth damage https://t.co/PjsbXhXlbI

Anita Levine: New York woman loses teeth after Moderna mRNA booster shot, blames “COVID mouth,” reveals epidemic of post-injection teeth damage https://t.co/zwmLj0TYMh

RT @EThornes: @laurieallee I got significantly better after my first shot of Moderna. Then my 2nd made me temporarily very out of it. The d…

RT @drsimonegold: Just one day after taking the Moderna booster shot, New York Times editor Carlos Tejada, 49, dies of a "heart attack." A…

RT @somaspirit: @globalnews Booster? No Moderna spikevax 1 shot April 2021 Resulting in: Angiodema Auto immune encephalitis Expressive…

RT @ShiraDinal_: @stkirsch Hi Steve, how does one check to see if an illness is related to the COVID vaccines? I’ve had the double shot fr…

RT @CRNORCAL22: @JeromeAdamsMD Maybe when Novavax releases their updated shot this fall the govt let’s the people get it for their 2nd boos…

RT @OSedmina: @JustinTrudeau @CPHO_Canada Our son is 3.25 years old. He had his last Covid shot (Moderna 2) in SEPT 22. The shots wear off…

RT @OSedmina: @JustinTrudeau @CPHO_Canada Our son is 3.25 years old. He had his last Covid shot (Moderna 2) in SEPT 22. The shots wear off…

RT @theandreaashe: @BwanaLawFirm @vancemurphy @US_FDA My dads best friend is on heart meds and received a pacemaker after the booster shot.…

RT @OSedmina: Our son is 3.25 years old. He had his last Covid shot (Moderna 2) in SEPT 22. The shots wear off in 6mo. WE CAN'T FIND ANY IN…

RT @OSedmina: Our son is 3.25 years old. He had his last Covid shot (Moderna 2) in SEPT 22. The shots wear off in 6mo. WE CAN'T FIND ANY IN…