Centers for Disease Control and Prevention

The AY.4.2 subvariant has been detected in at least five cases in the U.S.: in Washington, D.C., California, North Carolina, Washington state and Massachusetts.

Millions of eligible Americans can now get a Covid vaccine booster shot from Pfizer, Johnson & Johnson or Moderna. Here’s how to tell which one is best for you.

A CDC advisory panel Thursday endorsed boosters of Moderna and J&J Covid vaccines, sending the recommendation to the agency’s director for final approval.

The CDC said the most common side effects people reported after getting Covid vaccine boosters included pain at the injection site, fatigue, fever and headache.

The FDA authorized Covid vaccine booster shots made by J&J and Moderna, another critical step in distributing extra doses to tens of millions of people.

The White House said it will rely heavily on pediatricians and family doctors in its Covid vaccine rollout for kids 5 to 11, starting as early as next month.

CDC Director Dr. Rochelle Walensky says ending the Covid pandemic comes down to human behavior, which “hasn’t served us very well” so far.

Weeks after taking office, President Joe Biden gave agencies four months to prepare plans outlining their exposure to climate change risk and how to respond.

Some 56 countries fell short of the WHO’s goal of getting 10% of their populations immunized against the virus by the end of September.

Dr. Anthony Fauci said NIH data on pairing a primary regimen of Covid vaccines from one manufacturer with boosters from another will soon be available.

No migrants remain at a border camp under a bridge in Del Rio, Texas, where thousands of mostly Haitians amassed in recent days, the DHS secretary said Friday.

CDC Director Dr. Rochelle Walensky insisted she didn’t overrule a vaccine advisory committee by expanding the agency’s approval of Pfizer’s Covid boosters.

Biden said unvaccinated people are hindering economic growth, costing jobs and putting unnecessary strain on the health-care system.

The FDA still has not announced a decision on whether it will authorize Covid booster shots as a key CDC panel concludes its first day of a two-day meeting.

Former FDA Commissioner Dr. Scott Gottlieb said the CDC may soon offer greater clarity on who will be eligible for Covid booster doses.

Experts predict this flu season could be brutal. Here’s what you need to know about flu season and the Covid pandemic, plus when to get the flu vaccine.

The FDA staff declined to take a stance on backing booster shots of Pfizer’s Covid-19 vaccine, saying U.S. regulators haven’t verified all the available data.

A new CDC study out Friday provides what may be the most jolting evidence yet of the threat the highly contagious delta variant may pose to the fully vaccinated, particularly as it usurped every other COVID-19 strain to dominate American cases.

An expert review of data concludes Covid vaccine boosters are not needed at this time for the general public, a group of U.S. and international scientists said.

A new CDC study out Friday provides what may be the most jolting evidence yet of the threat the highly contagious delta variant may pose to the fully vaccinated, particularly as it usurped every other COVID-19 strain to dominate American cases.