U.S. stock indexes trimmed some of their stellar gains for the year.

A scientific panel is recommending that people 50 and older get a shot against bacteria that can cause pneumonia and other dangerous illnesses.

Updated COVID-19 vaccines are on their way.

Pfizer's CEO Albert Bourla is trying to reposition the global pharmaceutical giant for a post-pandemic world.

A fiery debate over public health and personal rights has gripped Puerto Rico as legislators clash with medical experts.

The COVID-19 treatments millions of have taken for free from the federal government will enter the private market next week with a hefty price tag.

U.S. health officials are recommending RSV vaccinations for moms-to-be as a second option to protect newborns.

Americans can now get an updated COVID-19 vaccine.

U.S. regulators have approved updated COVID-19 vaccines from Pfizer and Moderna, shots aimed at revving up protection this fall and winter.

U.S. regulators have approved the first RSV vaccine for pregnant women to protect their newborns.

U.S. hospital drug supplies may be strained further after a tornado ripped open the roof of a Pfizer factory this week.

A tornado has heavily damaged a major Pfizer pharmaceutical plant in North Carolina — the latest in a string of extreme weather events plaguing the U.S. Torrential rains flooded communities in Kentucky while an area from California to South Florida endured more blistering heat on Wednesday.

The next round of COVID-19 vaccines will target one of the latest versions of the coronavirus.

U.S. health regulators have given full approval to Pfizer’s COVID-19 pill Paxlovid.

Federal health advisers are backing a first-of-its-kind RSV vaccine to protect newborns by immunizing their moms late in pregnancy.

Older Americans and people with weak immune systems can get an extra COVID-19 booster dose this spring.

Moderna’s CEO is defending a plan to more than quadruple the company’s COVID-19 vaccine price.

U.S. health advisersare backing the continued use of Pfizer’s COVID-19 pill Paxlovid, saying it remains an important option for adults at high risk of severe illness.

Federal health advisers have narrowly backed an experimental vaccine from Pfizer that could become the first shot to protect older adults against the respiratory illness known as RSV.

California won’t make children get the coronavirus vaccine to attend schools.

China will not include Pfizer’s COVID-19 treatment drug in a national reimbursement list that would have allowed patients to get it at a cheaper price, saying it was too expensive.

U.S. regulators have cleared doses of the updated COVID-19 vaccines to children younger than 5.

Pfizer is asking U.S. regulators to authorize its updated COVID-19 vaccine for children under age 5.

The Indian Health Service says all tribal members covered by the federal agency will be offered a vaccine at every appointment, when appropriate.

The Virginia Department of Health announced the availability of a free booster dose of Novavax, a COVID-19 vaccine in Virginia Wednesday.

Pfizer will charge $110 to $130 for a dose of its COVID-19 vaccine once the U.S. government stops buying the shots.

The U.S. is about to offer updated COVID-19 booster shots to kids as young as 5.

Pfizer is asking the Food and Drug Administration to expand use of its updated COVID-19 booster shot to children ages 5 to 11.

Israel has started administering doses of the new COVID-19 vaccine tailored to fight the highly infectious omicron variant.

The European Medicines Agency has recommended the authorization of a tweaked booster dose of the Pfizer-BioNTech coronavirus vaccine that includes protection against two of the latest versions of omicron, as countries look to bolster their immunization programs ahead of winter.

New COVID-19 boosters targeting today’s most common omicron strains should begin arriving within days.

New COVID-19 boosters that target today's most common omicron strains are set to begin soon.

The European Medicines Agency has recommended the authorization of two coronavirus vaccines made by Pfizer-BioNTech and Moderna Inc., tweaked to include protection against an early version of the omicron variant.

The Biden administration hopes to make getting a COVID-19 booster as routine as going in for the yearly flu shot.

California won't allow teens age 15 and up to be vaccinated against the coronavirus without their parents' consent.

U.S. regulators have authorized updated COVID-19 boosters, the first to directly target today's most common omicron strain.

Pharmaceuticals Pfizer and BioNTech say they have asked the European Medicines Agency to authorize their updated coronavirus booster vaccine that includes the most recent omicron subvariants.

COVID-19 vaccines tweaked to better match today’s omicron threat are expected to roll out in a few weeks but how much will they help.

Pfizer’s COVID-19 pill appears to provide little or no benefit for younger adults.

Pfizer’s says its COVID-19 vaccine was 73% effective in protecting children younger than 5 as omicron spread in the spring.

Pfizer has asked U.S. regulators to authorize its combination COVID-19 vaccine that adds protection against the newest omicron relatives.

Researchers are seeking thousands of volunteers in the U.S. and Europe to test the first potential vaccine against Lyme disease in 20 years.

BioNTech, which teamed with Pfizer to develop a powerful COVID-19 vaccine, has reported higher revenue and net profit in the first half of the year.

U.S. regulators say they are no longer considering authorizing second COVID-19 booster shots for all adults under 50 this summer.

Everyone in Britain who is 50 or over will be offered a fourth dose of coronavirus vaccine in the fall, lowering the age threshold from the previously announced 65.

The U.S. is getting another COVID-19 vaccine choice.

U.S. pharmacists can now prescribe the leading COVID-19 pill directly to patients.

U.S. regulators are telling COVID-19 vaccine makers to tweak any booster doses intended for fall so they protect against the newest omicron relatives.

Government advisers are recommending that some U.S. adults get a modified COVID-19 booster shot this fall — one that better matches more recent virus variants.

U.S. health authorities are facing a critical decision: whether to offer new COVID-19 booster shots this fall that are modified to better match the latest changes of the shape-shifting coronavirus.

Pfizer says tweaking its COVID-19 vaccine to better target the omicron variant is safe and boosts protection.

Scientists estimate that nearly 20 million lives were saved worldwide by COVID-19 vaccines during their first year.

The Center for Disease Control and Prevention has recommended COVID-19 vaccines for children as young as 6 months, clearing the way for vaccinations to begin soon.

U.S. health officials have opened COVID-19 vaccines for infants, toddlers and preschoolers — the last group without the shots.

U.S. regulators have authorized the first COVID-19 shots for infants and preschoolers.

The first COVID-19 shots for infants, toddlers and preschoolers in the U.S. have moved a step closer.

A government advisory panel has endorsed a second brand of COVID-19 vaccine for school-age children and teens.

A review by federal health officials says that Pfizer's COVID-19 vaccine appears safe and effective for children under 5, the only group not currently eligible for vaccination.

Next week brings a marathon of hearings as the U.S. decides whether to open COVID-19 vaccinations to kids under 5.

White House officials say orders have been coming in for COVID-19 vaccine doses for small children.

A more traditional kind of COVID-19 vaccine is a step closer to becoming the fourth option for U.S. adults.

The Biden administration says children under 5 may be able to get their first COVID-19 vaccination doses as soon as June 21, if federal regulators authorize shots for the age group as expected.

Pfizer says it will provide nearly two dozen products at not-for-profit prices in some of the world’s poorest countries.

Parents hoping to get their youngest children vaccinated against COVID-19 have some encouraging news.

A federal appeals court is being asked to reconsider its decision allowing the Biden administration to require that federal employees get vaccinated against COVID-19.

Pfizer says three small doses of its COVID-19 vaccine protect kids under 5.

U.S. regulators have authorized a COVID-19 vaccine booster for healthy children ages 5 to 11.

The head of the World Health Organization has called on Pfizer to make its COVID-19 treatment more widely available in poorer countries.

A small number of COVID-19 patients are relapsing after taking Pfizer's antiviral pill, raising questions about the drug at the center of the U.S. response effort.

U.S. regulators are strictly limiting who can receive Johnson & Johnson’s COVID-19 vaccine due to a rare but serious risk of blood clots.

The Food and Drug Administration has set tentative dates in June to publicly review COVID-19 vaccines for the youngest American children.

Moderna is asking U.S. regulators to open its COVID-19 vaccine to the nation's youngest children.

COVID-19 patients have two treatment options that can be taken at home.

COVID-19 vaccines still offer strong protection against severe illness and death, but Moderna and Pfizer are testing combination shots as a possible new kind of booster.

Pfizer wants to expand its COVID-19 booster shots to healthy 5- to 11-year-olds.

Germany’s health ministry says the country may have to discard 3 million doses of expired COVID-19 vaccine by the end of June.

A federal appeals court has upheld President Joe Biden’s requirement that all federal employees be vaccinated against COVID-19.

Many Americans can now get a second COVID-19 booster, but it’s hard to tell who really needs another shot right now and who could wait.

A federal judge in Texas is barring the Navy from taking action for now against sailors who've objected to being vaccinated against COVID-19 on religious grounds.

Americans age 50 and older can get a second COVID-19 booster if it’s been at least four months since their last vaccination.

The European Union's drug regulator says it has begun an accelerated review process for an experimental coronavirus vaccine booster made by the Spanish company Hipra.

Moderna says it will ask regulators to authorize its COVID-19 vaccine for children under 6 but several hurdles need to be cleared before the shots could become available.

Moderna says its COVID-19 vaccine works in babies, toddlers and preschoolers.

Drugmaker Moderna has asked the Food and Drug Administration to authorize a fourth shot of its COVID-19 vaccine as a booster dose for all adults.

The U.N.-backed Medicines Patent Pool says that nearly three dozen companies worldwide will soon start making generic versions of Pfizer’s coronavirus pill.

Drugmaker Pfizer is expected to request authorization this week for an additional COVID-19 booster dose for seniors.

The European Medicines Agency said it has authorized Moderna’s coronavirus vaccine for children aged six to 11, in addition to recommending booster shots of Pfizer’s vaccine for those aged 12 and over.

Pfizer’s new COVID-19 treatment came with a catch when it debuted late last year: It can take months to make the tablets.

U.S. health officials say some people getting Pfizer or Moderna COVID-19 vaccines should consider waiting up to eight weeks between the first and second doses.

Need an at-home COVID test? Well, you won’t have to go too far to get one.

COVID-19 vaccines during pregnancy may protect babies after they're born and lead to fewer hospitalized infants.

New coronavirus cases are down 35% in the New River Valley, according to the health district’s leader.

U.S. regulators have put the brakes on their push to speed Pfizer’s COVID-19 vaccine to children under 5.

The Air Force has became the second military service to approve religious exemptions to the mandatory COVID-19 vaccine, granting requests from nine airmen to avoid the shots.

Ugandan authorities are seeking to legally mandate vaccines in draft legislation aimed at boosting the East African country's drive to inoculate more people against COVID-19.

Africa’s top health official is launching a campaign to enlist young people to encourage vaccinations, as just 11.3% of the continent’s 1.3 billion people are vaccinated against COVID-19.

COVID-19 vaccines still are saving untold lives, but omicron's easy spread has many wondering if they will need boosters every few months or even a new kind of shot altogether.

COVID-19 vaccines for kids under 5 may be available in the U.S. as early as March, but there are several hurdles still to clear.

The FDA could give Pfizer the green light to vaccinate young children by the end of the month

Pfizer is asking U.S. regulators to authorize extra-low doses of its COVID-19 vaccine for children under 5.