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Booster doses of Pfizer's coronavirus vaccine set recipients up to effectively withstand the ravages of both the Delta and Omicron variants, a group of new studies suggest.

Boosted folks are 90% less likely to die from a Delta infection than people relying solely on the initial two-dose vaccination, Israeli data show.

That protection will be critically important during the next coup...

Pfizer/BioNTech said Wednesday that while two doses of their coronavirus vaccine may not offer good protection against the Omicron variant, adding a booster shot does the trick.

According to a statement from the companies, blood tests fro...

Can the time of day you get your COVID-19 vaccine affect how many antibodies you’ll make?

A new study suggests that it can.

Researchers found higher antibody levels in health care workers who received their vaccines in the afternoon, and they suggest that response to the vaccine may be affected by circadian rhythms.

"Our observational study provides proof of concept that ...

The United States announced Monday that it will pour $400 million into a new program that should help other countries speed vaccines to their citizens.

Called the Initiative for Global Vaccine Access, the U.S. Agency for International Development said in a statement the prog...

The best available treatment for COVID-19 infection just got a lot easier to administer to more people, potentially saving more lives in the process, a new study claims.

Monoclonal antibodies have been shown to dramatically reduce risk of hospitalization and death if given within five days of developing symptoms of COVID.

However, there's a big roadblock to this getting this treatme...

U.S. pharmacies are struggling to keep up with Americans' demand for coronavirus vaccines and tests, and the pressure could intensify as antiviral pills to treat COVID-19 are approved by federal regulators.

“There’s crazy increased demand on pharmacies right now,” Theresa Tolle, an independent pharmacist whose store in Sebastian, Fla., has seen COVID-19 vaccine demand quadruple sinc...

It happens very rarely, but most teens and young adults who do experience heart inflammation (myocarditis) after a COVID-19 shot have mild symptoms and recover quickly, new research shows.

“Overwhelmingly, data continue to indicate that the benefits of COVID-19 vaccinat...

In nearly two-thirds of U.S. states, cancer patients weren't put at the front of the line for COVID-19 vaccines in the initial phase of vaccination, a new study finds.

Many cancer patients are especially vulnerable to COVID-19 as the disease or related treatments leaves them with weakened immune systems.

Perhaps many cancer patients were skipped over for COVID shots because vaccina...

If you're a patient with a weakened immune system, roll up your sleeves to stay safe over the holidays and winter months.

"Immunocompromised patients absolutely should get a flu shot as well as an additional COVID-19 vaccine dose," said Dr. Marwa Kaisey, a neuroimmunologist and assistant professor of neurology at Cedars-Sinai in Los Angeles.

"Otherwise, they are more likely to hav...

People who've already had COVID-19 have a higher risk of reinfection with the Omicron coronavirus variant than with earlier variants, new research shows.

The South African scientists who reported the findings believe that vaccination will have the power to stop severe illness, however.

Speaking at a World Health Organization briefing, study team member Anne von Gottberg, of the ...

Five cases of the Omicron coronavirus variant have been detected in New York state, one in Minnesota and one in Hawaii, officials in those states announced Thursday.

That brings the known total in the United States to nine, with California and Colorado previously announcing one case each.

One of the New York cases is a 67-year-old woman who traveled to South Africa, returned to the...

Lab studies show that the mutations found in COVID-19's Delta variant make the virus more resistant to existing vaccines, a potentially ominous development as the new Omicron variant starts to wend its way around the world.

Full vaccination with the Pfizer or AstraZeneca vaccines still produces enough antibodies to neutralize Delta, British researchers found.

But the Delta variant p...

Most vaccinated American adults have every intention of getting booster shots, a new poll finds.

Only about one in five say they won't get it, according to a Kaiser Family Foundation (KFF) survey conducted with 1,820 U.S. adults between Nov. 8 and Nov. 22. About 23% of vaccinated adults have already received a booster shot in the United States, up sharply from October when it was 10%.

Just one day after the first Omicron case was reported in the United States, federal officials announced a second case on Thursday, this time in a Minnesota man who had traveled to an Anime convention in New York City in November.

The U.S. Centers for Disease Control and Prevention said it is working on the case with the Minnesota Department of Health and the New York City Department of H...

Children and teenagers vaccinated against the mumps virus have accounted for one-third of infections in recent years, a new U.S. government study finds.

The reasons are unclear, and experts stressed that routine childhood vaccination remains the best weapon against mumps -- a contagious infection that is usually mild, but can cause serious complications.

After the mumps vaccine was ...

President Joe Biden on Thursday announced a new round of measures to protect Americans against the spread of coronavirus variants.

The strategy will include making rapid at-home COVID-19 tests free for more people, extending rules on mask wearing on planes and other modes of transport, launching public awareness campaigns on vaccinations and booster shots, starting family mobile vaccinati...

Which coronavirus vaccine is best at beating COVID-19 -- Moderna or Pfizer?

New research hands that honor to Moderna: In what is billed as the first head-to-head comparison of the two shots, researchers analyzed the health records of nearly 440,000 U.S. veterans who received one of the two vaccines between early January 2021 and mid-May 2021. All were followed for 24 weeks.

While bo...

As the world struggles with ways to stem the spread of the new Omicron variant, the U.S. Centers of Disease Control and Prevention announced Tuesday that international travelers to the United States will soon have to provide a negative result from a coronavirus test taken within 24 hours of departure.

That's a much tighter turnaround: Current rules allow fully vaccinated people to take a ...

Americans who are vaccinated and boosted against COVID-19 should have enough antibody protection to prevent severe illness if they become infected with the new Omicron variant, White House COVID response officials said Tuesday.

Omicron has caused concern among medical experts due to a "large number of mutations, around 50, much larger than previous variants," including some "anticipated t...

The first wave of girls to receive the HPV vaccine are much less likely to contract or die from cervical cancer than women just a few years older, a new study reports.

Nearly all cases of cervical cancer are caused by human papillomavirus (HPV), for which a vaccine has been available since 2006.

Cervical cancer deaths and cases have fallen dramatically among 14- to 24-year-old women...

Pfizer Inc. is expected to seek approval this week for emergency use of its booster shots among American teens ages 16-17.

Sources familiar with the matter told The New York Times that the U.S. Food and Drug Administration could give the green light in about a week, which would make the Pfizer booster shot the first one available for people younger than 18.

When asked about...

Vaccines and masks will be the United States' first line of defense against the new Omicron variant, not lockdowns or border closures, President Joe Biden told the nation Monday.

"If people are vaccinated and wear their mask, there's no need for lockdowns," Biden said, noting that vaccinated people who've gotten a booster shot are expected to have the best available protection against the...

Hopes for an easing of the pandemic were dealt a major setback over the Thanksgiving weekend, with news that a variant first spotted in South Africa carries a multiplicity of mutations that might make it resistant to approved vaccines.

At an emergency meeting convened Friday by the World Health Organization, the agency dubbed the variant, first labeled B.1.1.529, with the name Omicron, th...

As concerns about the new Omicron variant grow, vaccine makers say they're already working on ways to protect people against the potential new threat.

Pfizer said it and its partner BioNTech could develop and produce a "tailor-made vaccine" in about 100 days if a "vaccine-escape" variant emerges, NBC News reported.

Meanwhile, Moderna said it was employing a three-pro...

Women getting vaccinated against the cancer-causing human papillomavirus (HPV) now need two or three shots, but an African clinical trial suggests a single dose is just as effective.

The finding could speed up the immunization process in developing countries with high levels of HPV-related cancers and protect many more women more quickly.

"These findings are a gamechanger that may s...

Protection can gradually fade after a second dose of the COVID-19 vaccine by Pfizer-BioNTech, which suggests that a booster shot might be necessary, researchers report.

They analyzed data from more than 80,000 adults in Israel, average age 44, who had no previous evidence of infection and who had received a PCR test at least three weeks after their second shot of the two-dose Pfizer vacc...

Republican lawmakers in several states are pushing vaccine mandate exemptions for workers who have so-called natural immunity due to a previous COVID-19 infection.

That's despite evidence that vaccination can reduce the risk of COVID-19 even for those with a history of infection, and the fact that there's no easy way to assess the protection provided by prior infection, CBS News ...

People will probably need regular booster shots for COVID-19 over the next few years to keep their immune systems on guard against a potentially deadly infection, an infectious disease expert says.

COVID mutations and high transmission rates in some parts of the country mean that even the vaccinated remain at risk for a breakthrough infection, said Dr. Jonathan Abraham, assistant professo...

U.S. government worker compliance with the COVID-19 vaccination mandate had reached 95% as of Monday, which was the deadline set by the Biden administration.

"Already 95% of USG [federal government] employees are in compliance with the President's vax requirement," White House assistant press secretary Kevin Munoz wrote on Twitter...

An experimental Lyme disease vaccine shows promise in animal studies and could also help protect against other tick-borne diseases, researchers say.

The vaccine — which relies on the same mRNA technology used by some COVID-19 vaccines — protected guinea pigs against infection by Borrelia burgdorferi, the bacterium that causes Lyme disease.

The vaccine doesn't trigger th...

COVID-19 booster shots trigger much stronger and longer protection than full vaccination with two doses of the Pfizer or Moderna vaccines, according to a small study.

It also found that the response to a booster is even greater in fully vaccinated people who have had infections.

"Because these antibody levels are so robust, the booster could potentially give us protection for a long...

Pfizer Inc. said Monday that its coronavirus vaccine provides long-term protection in youth ages 12-15, according to data from a company clinical trial that included more than 2,200 participants.

In a company clinical trial that included more than 2,200 adolescents, getting two doses of the vaccine was 100% effective against the coronavirus from seven days to four months after the second ...

The U.S. Food and Drug Administration on Friday granted emergency use of both the Pfizer and Moderna COVID-19 booster shots for all adults, clearing the way to additional vaccine protection for tens of millions of Americans.

The announcement came hours before the start of a meeting of the U.S. Centers for Disease Control and Prevention's independent panel of vaccine experts to discuss the...

A COVID-19 vaccine booster shot gives cancer patients -- especially those with blood cancer -- much-needed protection, new research reports.

"Our study demonstrates in clear terms how the booster shot can make all the difference for some people with compromised immune systems, such as people with cancer," study co-author Dr. Balazs Halmos said in a news release from Montefiore Health Syst...

Moderna asked the U.S. Food and Drug Administration on Wednesday to allow emergency use of the company's coronavirus vaccine booster for all adults aged 18 and older.

Currently, the booster is approved for people 65 and older, along with adults in long-term care homes, those with underlying medical conditions and those with jobs that put them at high risk of exposure, the company said in ...

Almost 1 in 10 eligible U.S. children ages 5-11 have received a first shot of the Pfizer coronavirus vaccine since it was approved for that age group two weeks ago, the White House said Wednesday.

Of the 2.6 million doses put into kids' arms so far, 1.7 million were administered in the last week alone, which is about twice as many in the first week, according to White House COVID-19 coord...

Nearly a third of health care staff in U.S. hospitals were not vaccinated against COVID-19 as of mid-September, a new study shows.

Researchers analyzed data on more than 3.3 million health care workers at more than 2,000 hospitals nationwide between Jan. 20 and Sept. 15.

"Our analysis revealed that vaccine coverage among U.S. hospital-based [health care personnel] stalled significan...

Vaccinated health care workers with breakthrough COVID-19 infections shed less virus than those who are unvaccinated and infected, according to University of California, Los Angeles researchers.

"SARS-CoV-2 viral loads are known to be a critical driver of transmission," wrote authors led by Dr. Paul Adamson, an assistant professor of medicine in the division of infectious diseases. "Thus,...

The first human clinical trial of a nasal vaccine to slow the progression of Alzheimer's disease is set to begin after nearly 20 years of research.

This is a "remarkable milestone," according to Dr. Howard Weiner, co-director of the Ann Romney Center for Neurologic Diseases at Brigham and Women's Hospital in Boston.

"Over the last two decades, we've amassed preclinical evidence sugg...

The U.S. Food and Drug Administration is poised to approve Pfizer's COVID booster shots for all American adults as early as Thursday.

That would make tens of millions more Americans eligible for the booster doses, sources familiar with the plan told The New York Times.

The FDA is expected to make its decision without the input of its own expert panel, while the U.S. Centers...

The Biden administration plans to invest billions to partner with industry to expand the nation's ability to produce coronavirus vaccines, ensure domestic supply and help poor nations in their vaccination efforts.

The goal of the plan, to be announced Wednesday, is to produce at least 1 billion doses a year beginning in the second half of 2022, two top advisers to Biden told The New Y...

For Emily Litvin, this Thanksgiving is going to look different from the last one and she couldn't be happier about it.

"I'm so excited to have some sort of normalcy, especially for my daughter and her cousins. It's nice for them to all get together and experience the traditions that we grew up with," said Litvin, a schoolteacher who lives near Columbus, Ohio. "We're so excited."

But...

A stay on the Biden administration's COVID-19 vaccine mandate for large businesses has been upheld by a federal court.

The requirement that employees of businesses with 100 or more workers be vaccinated by Jan. 4 or wear face masks and get weekly tests was granted an emergency stay on Nov. 6 by the New Orleans-based 5th U.S. Circuit Court of Appeals, the Associated Press reporte...

COVID-19 vaccines are safe and effective for most cancer patients, a new study confirms.

Cancer patients have an increased risk of severe illness and death from COVID because their immune systems have been weakened by their disease or treatments.

"We pursued this study because there were limited data on the safety of SARS-CoV-2 vaccines in people with active cancer; no published pro...

In a finding that suggests a family's income influences parents' views on COVID vaccines for their younger kids, a new survey shows the more money parents make, the likelier they are to get their kids a shot.

The poll of more than 2,000 parents found that 47% of those with annual incomes of $100,000 or more were willing to get their children ages 5-11 vaccinated, compared with just 37% of...

About 900,000 U.S. children aged 5 to 11 received their initial dose of Pfizer's coronavirus vaccine during the first week of eligibility for that age group, the Biden administration said Wednesday.

Not only that, nearly 700,000 more are scheduled in the coming days, health officials added.

The low-dose Pfizer vaccine for younger children was approved on Nov. 2 and the first doses w...

As concerns mount that holiday travel and indoor gatherings will foster the spread of COVID-19, Pfizer on Tuesday asked the U.S. Food and Drug Administration to approve booster shots of its coronavirus vaccine for any American aged 18 and older.

With its application, the company included early results of a study that involved 10,000 people. That trial found the booster to be 95% effective...

Pfizer may soon seek U.S. Food and Drug Administration emergency authorization of its COVID-19 booster shot for anyone aged 18 and older.

Officials familiar with the situation told the Washington Post that the request could be filed as soon as this week and is likely to be supported by the FDA, according to the three insiders who spoke on the condition of anonymity because they w...

As new government data showed that 360,000 young kids have now gotten their first shot, the Biden administration on Monday asked schools to help by hosting vaccination clinics and providing information to parents on the benefit of the shots.

On Monday, First Lady Jill Biden kicked off a campaign to promote COVID vaccinations for kids as she and U.S. Surgeon General Dr. Vivek Murthy visit...

MONDAY, Nov. 8, 2021 (Healthday News) -- The Biden administration's new coronavirus vaccine mandate for large businesses has been blocked by a three-judge panel from the U.S. Court of Appeals for the Fifth Circuit in Louisiana.

In a petition filed Friday, a group of businesses, religious groups, advocacy organizations and several states -- including Louisiana and Texas -- argued that the ...

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