A top official at the Food and Drug Administration recently overruled government scientists on the availability of two COVID-19 vaccines.

The Food and Drug administration has approved a new COVID-19 vaccine made by Moderna but with limits on who can use it.

A combination shot for flu and COVID-19 using messenger RNA generated antibodies in a company-funded study.

The U.S. government will pay the vaccine maker Moderna $176 million to accelerate development of a pandemic influenza vaccine.

Asian shares have churned higher after the Dow Jones Industrial Average climbed to another record high.

The Nobel Prize in Medicine has been awarded to two scientists whose work led to mRNA vaccines against COVID-19.

Americans can now get an updated COVID-19 vaccine.

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

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

The University of Texas Medical Branch was awarded an agreement of nearly $25 million dollars from the U.S. Department of Defense to develop prototype vaccines against multiple diseases in collaboration with Moderna on Monday.

Harris County Public Health announced that it will begin administering Moderna COVID-19 updated boosters (Bivalent) to children six years of age and older beginning Wednesday. HCPH will also begin administering Pfizer COVID-19 updated boosters to children five years of age and older starting Thursday.

The number of new coronavirus cases and deaths reported globally continued to fall nearly everywhere in the world in what the World Health Organization described as a “welcome decline” at a media briefing on Wednesday.

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

Moderna said Friday that it is suing Pfizer and BioNTech, alleging that the two companies copied Moderna’s technology to make its Covid vaccine Comirnaty.

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

New coronavirus cases reported globally in the last week dropped by nearly a quarter while deaths fell by 6%.

British drug regulators have become the first in the world to authorize an updated version of Moderna’s coronavirus vaccine that aims to protect against the original virus and the omicron variant.

A court ruling is back in effect that blocks President Joe Biden from requiring federal employees to get vaccinated against COVID-19.

A court ruling is back in effect that blocks President Joe Biden from requiring federal employees to get vaccinated against COVID-19.

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

The nation’s youngest children are getting their chance at vaccines for COVID-19.

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.

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

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

Moderna says its experimental COVID-19 vaccine that combines its original shot with protection against the omicron variant appears to work.

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

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.

Pfizer now hopes to tell U.S. regulators how well its COVID-19 vaccine works in the littlest kids by early June.

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.

Moderna hopes to offer updated COVID-19 boosters in the fall that combine the original vaccine with protection against the latest variant.

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.

Here are things to know for Wednesday, March 30:

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

Here are things to know for Thursday, March 23:

Moderna is now seeking emergency use authorization from the FDA for its COVID-19 vaccine for children under 6 years old.

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.

Moderna says it has signed a memorandum of understanding with Kenya’s government for the drugmaker's first mRNA vaccine manufacturing facility in Africa.

The World Health Organization is creating a global training center to help poorer countries make vaccines, antibodies and cancer treatments using the messenger RNA technology used to make COVID-19 vaccines.

Egypt, Kenya, Nigeria, Senegal, South Africa and Tunisia will be the first African countries to receive the technology required to produce mRNA vaccines on the continent.

Tokyo has launched a mass inoculation drive for COVID-19 booster shots at a temporary center operated by the military as Japan tries to speed up delayed third jabs to counter surging infections.

Moderna has begun testing an omicron-specific version of its COVID-19 vaccine in healthy adults.

Haiti's health minister says the country is fighting a rise in COVID-19 cases as the government struggles to convince people to get vaccinated.

U.S. officials are loosening rules that call on health care workers to stay out of work for 10 days if they test positive for COVID-19.

Moderna said Monday that a booster dose of its COVID-19 vaccine should offer protection against the rapidly spreading omicron variant.

U.S. health officials say most Americans should get the Pfizer or Moderna vaccines instead of the Johnson & Johnson shot.

Vaccine makers are racing to update their COVID-19 shots against omicron even before it’s clear a change is needed, just in case.

Asian shares are mixed as investors continue to cautiously weigh how much damage the new omicron coronavirus variant may unleash on the global economy.

Memorial Hermann announced Monday that it’s now offering Pfizer and Moderna vaccine booster shots to all adults ages 18 years and older who received their second dose at least six months ago.

The department said the issue relates to the use of the Moderna vaccine administered prior to the product's expiration date but outside of its use by date.

The NBA has told its players, coaches and referees that they should receive booster shots against the coronavirus, with particular urgency for those who received the single-dose Johnson & Johnson vaccine.

Moderna is scaling back expectations for the number of COVID-19 vaccine deliveries it expects to make this year and the revenue it will record from them.

U.S. regulators are delaying their decision on Moderna’s COVID-19 vaccine for 12- to 17-year-olds while they study the rare risk of heart inflammation.

The vaccine’s protection goes down with time, so medical experts recommend a supplemental dose after two to six months. Find out here if it’s time to get one.

Moderna says it will make up to 110 million doses of its COVID-19 vaccine available to African countries.

Moderna says its low-dose COVID-19 vaccine is safe and appears to work in 6- to 11-year-olds.

A team of young scientists in South Africa is assembling the equipment needed to reverse engineer Moderna's coronavirus vaccine.

Millions more Americans are now eligible for COVID-19 boosters, and they can get a different vaccine than their first shots.

Federal health officials say millions more Americans can get a COVID-19 booster and choose a different vaccine for that next shot.

U.S. regulators are extending COVID-19 boosters to Americans who got the Moderna or Johnson & Johnson vaccine.

Federal regulators are expected to authorize the mixing and matching of COVID-19 booster shots this week.

COVID-19 booster shots are an extra dose of the original vaccine, and some experts wonder why they weren't updated to better match the delta variant.

A panel of U.S. health advisers has endorsed booster shots for Moderna’s COVID-19 vaccine.

The Food and Drug Administration is wrestling with how to decide on booster doses of the single-shot Johnson & Johnson COVID-19 vaccine.

The chairman of Moderna says the company has no plans to share the recipe for its COVID-19 vaccine because executives have concluded that scaling up their own production is the best way to increase the global supply.

The United Nations chief says the pandemic has forced more than 100 million people into poverty and left over 4 billion people with little or no social support, health care or income protection.

The U.S. Department of Health and Human Services said COVID-19 vaccinations have helped prevent roughly 24,000 new infections and 3,600 deaths among seniors in Texas within the first five months.

The European Union’s drug regulator has given its backing to booster shots of the Pfizer-BioNTech COVID-19 vaccine for people 18 and older.

Pakistan’s planning minister says the government will begin a drive to vaccinate children aged 12 or above to protect them from coronavirus.

In a story published September 27, 2021, about vaccine mandates for health care workers, The Associated Press erroneously reported that Dr. Jeff Smith was the CEO of Cedars-Sinai Medical Center.

A Hawaii judge issued a bench warrant for an Illinois woman after she failed to appear for a virtual court hearing Wednesday following her arrest for an alleged fake COVID-19 vaccination card that misspelled Moderna as “Maderna.”

Millions of Americans are now eligible to receive a Pfizer booster shot to help increase their protection against the worst effects of the coronavirus.

Vietnam is speeding up its vaccination program in an effort to loosen coronavirus lockdown restrictions in major cities by the end of the month.

Africa’s already thin supply of COVID-19 vaccines has taken another significant hit.

COVID-19 booster shots may be coming for at least some Americans but there's still important science to be worked out about who really needs them and when.

The Africa director of the World Health Organization says the continent was able to triple its COVID-19 vaccination rate over the past week, helped by growing numbers of donations of doses from developed countries.

Japan is suspending use of about 1.63 million doses of Moderna vaccine after contamination was found in some unused vials.

KPRC 2 reporter Haley Hernandez speaks with Dr. Gary Sheppard, president of the Harris County Medical Society, to break down what people need to know about the COVID-19 booster shots.

Memorial Hermann announced that it will offer booster shots of the Pfizer and Moderna vaccine in hospitals and clinics throughout the Greater Houston area to immunocompromised people who meet criteria set by the Centers for Disease Control and Prevention.

Asian shares are gaining, boosted by a near-record rise on Wall Street.

The U.S. is planning booster doses of the Pfizer and Moderna COVID-19 vaccines, but if you got the one-dose Johnson & Johnson shot instead, stay tuned.

Americans at high risk from COVID-19 because of severely weakened immune systems are now allowed to get a third vaccination in hopes of better protection.

A COVID-19 vaccine “breakthrough” case is when a vaccinated person gets infected with the coronavirus.

A top official at the European Medicines Agency says a decision on whether to recommend that Moderna’s COVID-19 vaccine be authorized for children is expected late next week.

As many Asian countries battle their worst surge of COVID-19 infections, the slow flow of vaccine doses from around the world is finally picking up speed, giving hope that inoculation rates can increase and help blunt the effect of the rapidly spreading delta variant.

Fort Bend County Judge KP George announced Saturday Fort Bend County had reached a huge milestone in its fight against the coronavirus -- over 72% of eligible residents have received at least one dose of the COVID-19 vaccine as of July 3.

The top health official in Australia's Queensland state is advising adults under age 40 not to take the AstraZeneca coronavirus vaccine because of the risk of a rare blood clotting disorder, even though the Australian government is making those shots available to all adults.

Moderna President Dr. Stephen Hoge says his company is working on developing COVID-19 vaccine booster shots while also trying to harness the genetic code technology it helped pioneer to fight other diseases.

How soon vaccines expire is a critical question as the Biden administration prepares to send tens of millions of unused COVID-19 doses abroad to help curb the pandemic.

The world’s leading COVID-19 vaccines may offer lasting protection that diminishes the need for frequent booster shots.

Social media users shared numerous false claims this week about President Joe Biden and his administration.

One Houston area mother and her 17-year-old son have been dealing with the headache of having to figure out what to do after her son mistakenly received the Moderna vaccine through HCA due to a clerical error.

Here are things to know for Wednesday, May 26:

Moderna says its COVID-19 vaccine strongly protects kids as young as 12.

Japan mobilized military doctors and nurses to give shots to elderly people in Tokyo and Osaka as the government desperately tries to accelerate its vaccination rollout and curb coronavirus infections just two months before hosting the Olympics.

Japan has expanded a coronavirus state of emergency hours after it approved the use of two more vaccines in an effort to contain a worrying surge in infections nine weeks ahead of the opening of the Tokyo Olympics.