Pfizer says new data show booster shots of its vaccine are highly protective against Covid.

Booster shots in adults who received the Pfizer-BioNTech vaccine were highly effective at preventing symptomatic Covid-19…

What Are Next Steps as C.D.C. Panel Considers Moderna and J. & J. Boosters?

An independent committee of experts to the Centers for Disease Control and Prevention is meeting on…

C.D.C. Panel to Debate Boosters and ‘Mix-and-Match’ Strategy

As the latest wave of the virus ebbs in most parts of the United States, advisers…

Why Is Good Medical Advice for Pregnant Women So Hard to Find?

And yet it’s in widespread use. In fact, there are hundreds of medications potentially being taken…

F.D.A. Authorizes Moderna and Johnson & Johnson Booster Shots

WASHINGTON — The Food and Drug Administration authorized booster shots on Wednesday for tens of millions…

Pain Doctor Accused of Sexually Assaulting Patients Faces New Federal Charges

The federal investigation in the case is still in progress, and officials urged anyone who might…

Brazil Senate’s Pandemic Panel, in Last-Minute Shift, Softened Criminal Recommendations on Bolsonaro

BRASÍLIA, Brazil — On Tuesday night, a Brazilian congressional panel was hours away from revealing on…

Brazil Senate’s Pandemic Panel, in Last-Minute Shift, Softened Criminal Recommendations on Bolsonaro

BRASÍLIA, Brazil — On Tuesday night, a Brazilian congressional panel was hours away from revealing on…

How Chemours and DuPont Avoid Paying for PFAS Pollution

A Blame-Shifting Exercise The transactions that created Chemours and reinvented DuPont laid the groundwork for a…

Nadia Chaudhri, Scientist With an End-of-Life Mission, Dies at 43

Nadia Chaudhri, a neuroscientist with terminal ovarian cancer who used her final months to raise money…