How to Prepare for BA.2, the Omicron Subvariant

Taking these seven steps now can lower your risk and minimize the disruption to your family’s life.

F.D.A. Allows Second Covid Boosters for Everyone 50 and Older

People in the age group can get the additional shot at least four months after their first booster. Those 12 and older with certain immune deficiencies are also eligible.

Alopecia Hair Loss: What to Know About Jada Pinkett Smith’s Condition

Jada Pinkett Smith’s hair loss condition played a major role in an incident at the Oscars. Here’s what we know about it.

Biden Administration Plans to Offer Older Americans Second Booster Shots

The plan will offer people 65 and older — and possibly some younger adults — the option of another booster, in case infections surge again soon.

F.D.A.’s Accelerated Drug Approvals Come Under Scrutiny

A drug to prevent preterm birth may provide the next test of the agency’s process for speedily getting drugs on the market, despite limited evidence that some work.

Moderna to Seek Authorization of Its Coronavirus Vaccine for Young Children

The company said the vaccine produced a strong immune response in children younger than 6, but proved only about 40 percent effective in preventing symptomatic Covid-19.

Pfizer Recalls Some Blood Pressure Drugs, Citing Cancer Risk

The move follows recalls of other medications found to have higher levels of potential carcinogens.

¿Por qué me despierto con dolor de cabeza?

Y ¿hay algo que pueda hacer para evitarlo? Una de las causas más comunes es la cafeína, o la falta de ella.

This Sedative Is Now a Go-To Drug for Executions. But Does It Work?

A legal battle in Oklahoma over whether prisoners feel severe pain after being given the sedative, midazolam, will determine whether its use is constitutional.