But Pfizer wants approval for a third dose of its COVID-19 vaccine, saying another shot within 12 months could dramatically boost immunity, and maybe help ward off the latest Delta coronavirus mutant.
New research adds to evidence that COVID-19 vaccines still offer strong protection against the delta variant, which is spreading rapidly around the world and accounts for most cases in the U.S.
Shooting on Tom Hanks and Steven Spielberg's World War II mini-series has been put on hold after one of the main stars tested positive for COVID-19.
The world’s leading COVID-19 vaccines may offer lasting protection that diminishes the need for frequent booster shots, new studies show. Here's the latest virus news.
Tom Hanks and Rita Wilson are still waiting to receive their COVID-19 vaccine as they are "too young".
The first case of the Brazilian variant of COVID-19 — a third strain that spreads more rapidly and easily than the original strain of the virus — has been discovered in Wisconsin, the state Department of Health Services said.
Florida pediatricians reported that for the first known time an infant has been born with COVID-19 antibodies to a vaccinated mother.
You might be among the more than 26.6 million people in the United States who have had Covid-19 -- and when it comes to coronavirus vaccines, emerging variants or the risk of re-infection, you might have a lot of questions.
So you finally got your coronavirus vaccine. It took weeks of waiting, maybe a few calls before hitting the jackpot with a drive-through vaccination clinic. Or maybe you're a health care worker who got the shot at work.
NOTE: This story, first published in November, was updated on Feb. 22 to provide the latest information regarding Covid-19 testing availability.
Experts are urging people to overhaul their lifestyle and focus on improving their mental wellbeing before getting the COVID-19 vaccine.
CLAIM: The head of research at Pfizer says the COVID-19 vaccine causes female sterilization because it contains a spike protein known as syncytin-1.
Immunity to COVID-19 infection lingers for at least five months, researchers reported — and probably longer than that.
Less than 2% of Wisconsin residents had antibodies to the COVID-19 coronavirus in July, according to early results from a statewide survey.
There are three broad categories of coronavirus tests in the U.S. Two diagnose whether you have an active infection, and a third indicates if …
The drug uses an approach similar to treating COVID-19 patients with convalescent plasma, or blood products from people recovering from an infection.
With a vaccine months off, companies are rushing to test what may be the next best thing: drugs that deliver antibodies to fight the virus right away, without having to train the immune system to make them.
Health experts think people who had COVID-19 will have some immunity against a repeat infection. But they don't know how much protection or ho…