A former top vaccine official says he was forced out of government after trying to block Robert F.

The Food and Drug Administration’s chief tobacco regulator has been forced out.

The top vaccine official with the Food and Drug Administration has resigned and criticized the nation's top health official for allowing “misinformation and lies” to guide his thinking behind the safety of vaccinations.

Updated COVID-19 vaccines are on their way.

Government advisers say it’s time to update the recipe for the COVID-19 vaccines Americans will receive in the fall.

The Food and Drug Administration meets this week to consider a much-debated treatment for Lou Gehrig’s disease.

New blood donations rules will allow sexually active gay and bisexual men in monogamous relationships to give in the U.S. The Food and Drug Administration guidelines ease decades-old restrictions on blood donations put in place to protect the blood supply from HIV.

Certain Americans at high risk from COVID-19 can get an extra vaccine booster this spring.

Pfizer says its updated COVID-19 booster significantly revved up adults' virus-fighting antibodies.

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

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.

Advisers to the U.S. government are recommending that COVID-19 booster shots used this fall be modified to better match more recent variants of the coronavirus.

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.

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

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

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

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

U.S. regulators are shortening the time that people who received Moderna's COVID-19 vaccine have to wait for a booster — to five months rather than six.

The U.S. is expanding COVID-19 boosters as it confronts the omicron surge.

The U.S. booster campaign is getting a lot simpler now that regulators have opened extra vaccine shots to all adults.

The U.S. is opening COVID-19 vaccine boosters to all adults, and urging them for anyone 50 and older.

The Food and Drug Administration has paved the way for children ages 5 to 11 to get Pfizer’s COVID-19 vaccine.

It could take U.S. regulators a few weeks to decide whether to clear COVID-19 vaccines for children ages 5 to 11.

Pfizer has submitted research to the U.S. Food and Drug Administration on the effectiveness of its COVID-19 vaccine in children but the shots may not be available until November.

Pfizer has submitted research to the U.S. Food and Drug Administration on the effectiveness of its COVID-19 vaccine in children as it moves closer to seeking approval for expanded use of the shots.

Pfizer says its COVID-19 vaccine works for children ages 5 to 11.

The Food and Drug Administration’s vaccine chief is pledging to rapidly evaluate COVID-19 vaccines for younger kids — as soon as the studies are in.

Temporary side effects after COVID-19 vaccines are normal and a sign your immune system is revving up.

Johnson & Johnson’s COVID-19 vaccine will remain in limbo for a while longer.

Health authorities are investigating highly unusual blood clots after use of two COVID-19 vaccines, and a rare immune response is the main suspect.

The U.S. recommendation to “pause” use of the single-dose Johnson & Johnson COVID-19 vaccine set off a chain reaction worldwide and dealt a setback to the global vaccine campaign.

(AP Photo/Dmitri Lovetsky)MEXICO CITY — Mexico has received its first shipment of Russia’s Sputnik V COVID-19 vaccine. ___WASHINGTON — The White House now says it expects to catch up by mid-week on deliveries of coronavirus vaccine doses that were delayed by severe weather. AdBeginning March 1, anyone aged 55 to 64 will be allowed to get a COVID-19 vaccine. ___OKLAHOMA CITY — Oklahoma opened its second phase of coronavirus vaccinations on Monday, providing inoculations to public school teachers and staff and to adults of any age with illnesses that make them susceptible to the virus. There have been 419,853 coronavirus cases and 4,203 deaths due to COVID-19 in Oklahoma since the pandemic began, the state health department reported.

Johnson & Johnson asked U.S. regulators Thursday to clear the world’s first single-dose COVID-19 vaccine, an easier-to-use option that could boost scarce supplies. J&J’s vaccine was safe and offered strong protection against moderate to severe COVID-19, according to preliminary results from a massive international study. AdDr. Peter Marks, FDA’s vaccine chief, has cautioned against making comparisons before the evidence is all in. OTHER OPTIONSIn large U.S. studies, two doses of the Pfizer and Moderna vaccines proved 95% protective against any symptomatic COVID-19. J&J also is studying a two-dose version of its vaccine, but results won’t be available for several more months.

In the new guidelines posted on its website, the FDA said vaccine makers should follow trial participants for at least two months to rule out any major side effects before seeking emergency approval. That standard had been a sticking point between the FDA and White House officials, who said it could unreasonably delay the availability of COVID-19 vaccines. On Monday Trump said vaccines are coming “momentarily,” in a video recorded after he returned to the White House. The White House attempt to block the guidance followed a string of instances in which the Trump administration has undercut its own medical experts working to combat the pandemic. Beyond exposing the rift between the White House and FDA, the delay in releasing the guidelines may have had limited practical effect.