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 ...

The Omicron booster will protect against BA.5 and BA.4 as well as the original coronavirus strain. (Getty Images) COVID-19 booster shots that target the highly contagious Omicron variant — which ...

Omicron-targeting COVID-19 boosters are now available, but many are wondering: Should they get the shots immediately or wait to time them closer to the holidays? The short answer is it depends — both ...

Omicron is mutating in giant leaps, with scientists racing to keep up. Its diversity is challenging vaccine efficacy and complicating treatment. But this fall, broad spectrum bivalent vaccines may ...

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 ...

Researchers published in the British Medical Journal (BMJ) have found infection or vaccination with the omicron variant of COVID-19 do little or nothing to protect against future infections. According ...

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.