This week, the FDA and CDC authorized Pfizer and Moderna to start administering vaccine boosters that have been reengineered to specifically target the Omicron BA.4 and BA.5 variants that caused this ...

Let’s clear up one misconception. Viruses aren’t like deodorant on your armpit or a fart in a room. They don’t necessarily automatically get weaker over time. In fact, often it’s quite the opposite.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. It’s happening again. BA.5, one of close to a half dozen strains ...

Pfizer said Saturday that using new versions of its Covid-19 vaccine as boosters led to a superior antibody response against the Omicron variant compared to its current shot. The results in some ways ...

The Ba.4 and Ba.5 subvariants of omicron are now estimated to make up more than half of all COVID-19 cases in the United States. Here’s what to know. Less than six months after the omicron wave hit ...

Pfizer announced Saturday that tweaking its COVID-19 vaccine to better target the omicron variant is safe and works — just days before regulators debate whether to offer Americans updated booster ...

An omicron subvariant is once again demonstrating immune-dodging abilities, posing a threat to both vaccinated and previously infected individuals. A report published Wednesday in the New England ...

Chinese health authorities are racing to catch new mutant COVID strains, as more than a third of Omicron variants detected in the crushing wave of infections slamming the country have resulted in ...

New York City health officials are warning residents that the infectious omicron subvariant XBB.1.5 may be more likely to infect people who have already been vaccinated or infected with COVID-19.

The rise of new coronavirus subvariants is continuing to erode the grip the Omicron strain BA.5 has held for months, worrying health officials that a winter resurgence of COVID-19 may be ahead. Eating ...

Omicron-specific booster: Children as young as 6 months old are now eligible to get the updated COVID-19 vaccine. (Getty Images) While the American Academy of Pediatrics (AAP) recommends that all ...