Think

A Popular Test Claims to Boost I.V.F. Success. The Science Is Unclear.

The C.D.C. recommends that other vaccines be preferred over J.&J.

A C.D.C. panel weighs the risks of blood clots linked to the J.&J. vaccine.

The C.D.C.’s first coronavirus tests were contaminated and poorly designed, the agency says.

C.D.C. Virus Tests Were Contaminated and Poorly Designed, Agency Says

British studies warn of Omicron’s speed, and one notes the need for boosters.

In Chicago, a New Approach to Gay and Bisexual Men With Prostate Cancer

Women Earn $2 Million Less Than Men in Their Careers as Doctors

The Pandemic Has Your Blood Pressure Rising? You’re Not Alone.

J.&J. booster works well for people who had Pfizer originally, study finds.

As uncertainties linger about the new variant, officials say U.S. Omicron cases are likely to rise.

Omicron Variant Spreading Twice as Quickly as Delta in South Africa

Omicron and Vaccine Protection