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The C.D.C. recommends Pfizer-BioNTech’s vaccine for children ages 5 to 11.

A C.D.C. panel recommends Pfizer-BioNTech’s vaccine for children ages 5 to 11.

Pfizer and Moderna shots are less effective in people with weak immune systems, a study finds.

Covid shots for younger children could begin days after a C.D.C. panel meets.

How Often Do Covid Vaccines Cause Heart Problems in Kids?

Dr. Aaron T. Beck, Developer of Cognitive Therapy, Dies at 100

The Novavax vaccine, backed by Operation Warp Speed, has won its first authorization — in Indonesia.

Home Care Is Broken. Can Congress Fix It?

Why Aren’t More People Comparison Shopping for Health Plans?

Why Aren’t More People Comparison Shopping for Health Plans?

Vaccination offers more protection against Covid-19 than previous infection, a C.D.C. study suggests.

Has the Virus Infected Huge Numbers of Younger Children?

Childhood vaccinations have lagged across the world because of the pandemic.