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Vials of the Pfizer-BioNTech COVID-19 vaccine sit in a cooler before being thawed at a pop-up COVID-19 vaccination site in the Bronx borough of New York on Tuesday, Jan. 26, 2021.

Pfizer Asks FDA to OK COVID-19 Booster Shots for All Adults

Pfizer asked U.S. regulators Tuesday to allow boosters of its COVID-19 vaccine for anyone 18 or older.
This Feb. 5, 2021, file photo shows the Pfizer logo displayed at the company's headquarters in New York. Pfizer says its experimental pill for COVID-19 cut rates of hospitalization and death by nearly 90% among patients with mild-to-moderate infections.

Pfizer Says COVID-19 Pill Cut Hospital, Death Risk By 90%

Pfizer Inc. said Friday that its experimental antiviral pill for COVID-19 cut rates of hospitalization and death by nearly 90% in high-risk adults.
This 1981 electron microscope image made available by the U.S. Centers for Disease Control and Prevention shows hepatitis B virus particles, indicated in orange.

Panel: All U.S. Adults Under 60 Should Get Hepatitis B Shots

As progress against the disease has stalled, an advisory committee recommended U.S. adults younger than 60 be vaccinated against hepatitis B.
This image provided by Mazda Motor Corp., shows that the Mazda Co-Pilot Concept car flashes hazard lights on and off, after a mock driver has undergone a sudden health problem, and will come to a safe stop

New Mazda Cars Will Stop If Driver Suffers Medical Emergency

By 2025, the cars will even know when drivers are about to have a sudden health problem and warn them.
Are COVID-19 boosters the same as the original vaccines?

Are COVID-19 Boosters the Same As the Original Vaccines?

Yes, COVID-19 boosters use the same recipe as the original shots, despite the emergence of the more contagious delta variant.
This October 2021, photo provided by Pfizer shows kid-size doses of its COVID-19 vaccine in Puurs, Belgium.

COVID-19 Vaccine Campaign Expands to Kids Aged 5-11

The U.S. enters a new phase Wednesday in its COVID-19 vaccination campaign, with shots now available to millions of elementary-age children.
This 2020 electron microscope image provided by the National Institute of Allergy and Infectious Diseases - Rocky Mountain Laboratories shows SARS-CoV-2 virus particles which causes COVID-19, isolated from a patient in the U.S., emerging from the surface of cells cultured in a lab. On Monday, Oct. 5, 2020, the top U.S. public health agency said that coronavirus can spread greater distances through the air than 6 feet, particularly in poorly ventilated and enclosed spaces. But agency officials continued to say such spread is uncommon, and current social distancing guidelines still make sense. (NIAID-RML via AP)

Study: Vaccinated People Can Easily Transmit COVID-19 at Home

COVID-19 vaccines remain effective but transmission of the delta variant is still a risk for one in four households, according to a new study.
A health worker picks syringes as seniors get vaccinated with the first dose of the Pfizer coronavirus vaccine at the newly-opened mass vaccination program for the elderly at a drive-thru vaccination center in Johannesburg, South Africa.

World Faces Syringe Shortage

African health officials and the United Nations are warning of a looming shortage of more than two billion syringes around the world.
FILE - This Dec. 23, 2020 file photo shows a vial of the Moderna COVID-19 vaccine in the first round of staff vaccinations at a hospital in Denver.

Moderna Says Low-Dose COVID Shot Works for Kids 6 to 11

Moderna said Monday that a low dose of its COVID-19 vaccine is safe and appears to work in 6- to 11-year-olds.
This Tuesday, Jan. 5, 2021 file photo shows a vial of the Moderna COVID-19 vaccine at a pop-up vaccine clinic in Salt Lake City.

Is It Time to Get a COVID-19 Booster?

A number of factors, including the vaccine you started with and when your last dose was, help determine when you qualify.