The move to shorten the Pfizer booster interval comes as the U.S. shatters daily case records. The recommended interval for those who received Moderna or Johnson & Johnson vaccines has not changed.

As coronavirus cases and pediatric hospitalizations surge in the U.S., the majority of U.S. schools are staying open for in-person learning.

Amid the omicron surge, there is understandable anxiety among parents, particularly those with kids under 5. Pediatric infectious disease doctor Ibukun Kalu answers some of their questions.

A shepherd in Germany arranged her animals into a 330-foot syringe to encourage people to get vaccinated.

Breakthrough infections from the omicron variant have been spreading like wildfire among casts and crews, so understudies and swing performers have been helping keep shows afloat.

The CDC recently cut the number of days it recommends COVID-positive people remain in isolation from 10 days to five, but it didn't require a negative test to leave isolation.

Eyder Peralta asks John Suthers, mayor of Colorado Springs, Colorado, about pandemic restrictions and fatigue.

A resurgence in COVID-19 cases is testing the endurance of health care workers who care for the sickest patients, most of whom are unvaccinated.

The U.S. will soon mark two years since the first confirmed case of COVID-19 in the country, and the number of new infections has never been higher. Meanwhile, travelers are facing canceled flights.

The variant caused fewer deaths and less severe infections than past versions of the virus in South Africa, but that could be different in other countries.

Two studies that have not yet been peer reviewed indicate increased protection against the infectious omicron variant.

Skyrocketing COVID-19 case rates have caused officials In New York City and elsewhere to scale back their New Year's Eve celebrations. Around the country, people are facing tough decisions.

The seven-day average of new COVID-19 cases topped 280,000 this week as the omicron variant spreads rapidly across the country, according to Johns Hopkins University's tracker.

The omicron situation seems to be changing so fast that it's hard to figure out which activities are safe on any given day. Two experts guide us through how to make a smart risk budget.

Some workers are concerned about new guidance from the Centers for Disease Control and Prevention that shortens the isolation period for COVID-19 cases.