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COVID-19 booster shots are now available for certain fully vaccinated people after evidence revealed the initial series of shots — two doses for the Pfizer and Moderna vaccines, and one dose for the Johnson & Johnson vaccine — appear less effective against the delta variant as protection wanes over time.
 

Waves of Covid can give you an awful sense of déjà vu. As “Hot Vax Summer” gave way early to Delta-anxious fall, you could be forgiven for feeling a familiar sense of dread, not so different from what you’d felt before the dismal winter of 2020 or the Southern surge that took off that July.
 

A first COVID shot will give kids some protection, but none of them will be fully vaccinated until the beginning of December.
 

By January 4, all U.S. businesses with 100 or more employees will need to either instate a mandatory Covid vaccine policy or require that all unvaccinated employees wear a mask at work while getting tested for Covid regularly, according to a new Occupational Safety and Health Administration order on Thursday.
 

If you got a Johnson & Johnson COVID-19 vaccine for your initial series and specifically want the Moderna, get the half-dose.
 

For many families, the approaching end-of-year holidays will mean not only navigating the return of crowded airports and packed roads, but also scheduling vaccinations for children 5 to 11 years old who are now eligible for coronavirus vaccine shots.
 

Increased blood pressure, blood clots, myocarditis and heart attacks are all associated risks for the flu virus.
 

As the U.S. opens up while still in the midst of a pandemic, this winter is likely to see the return of colds and the flu, along with continuing COVID-19 cases. The symptoms we once may have glossed over now could indicate something worse – which isn't the most comforting concept.
 

Pediatricians and schools here have been inundated with requests from parents racing to get their children vaccinated in time for Thanksgiving and winter holiday travel plans.
 

The Centers for Disease Control and Prevention’s independent vaccine advisers will vote today on recommendations for administering the Pfizer-BioNTech Covid-19 vaccine to kids ages 5 to 11.
 

A new study looking at pregnant people with COVID-19 found that proteins and genes associated with immune responses were higher in male fetuses than female fetuses.
 

Coronavirus infections are down, hopes are up, but uncertain forecasts put the Biden administration in a pandemic messaging bind.