A new antibiotic, zoliflodacin, is as effective as the current standard of care. Its creation may hasten the arrival of other needed antibiotics.

Citing questions about the integrity of the process, the university said that “no final action” had been taken.

A professor at the City College of New York engaged in “significant research misconduct,” an investigating committee concluded.

Scientists and educators are searching for ways to improve air quality in the nation’s often dilapidated school buildings.

The “grade A” endorsement means that two additional drugs should be covered under the Affordable Care Act.

This fall, Americans will be urged to get shots against the flu, Covid and, if they’re older, R.S.V.

In advance of a scientific meeting on Thursday, officials proposed offering new shots to Americans each fall, a strategy long employed against the flu.

Janssen Pharmaceuticals ended a global trial after independent experts determined the vaccine was not effective. But there are other possibilities in the pipeline, scientists said.

An uptick hinted at in surveillance data was a mirage, the officials said.

The shots may help older, pregnant and immunocompromised Americans dodge serious illness or death. But the doses are not likely to prevent infections in any...