Health

The data, which appeared fleetingly online on Wednesday, confirmed transmission in two households. Scientists called on the agency to release the full report.

The stop-work order on U.S.A.I.D.-funded research has left thousands of people with experimental drugs and devices in their bodies, with no access to monitoring or care.

Two new Canadian studies are the largest to date looking at death rates and psychosis associated with cannabis use disorder.

A new version of the virus is widespread in wild birds but had not previously been detected in cows.

He marshaled epidemiological research to press for changes in drug policy, alternatives to prison and needle-exchange programs to slow the spread of AIDS.

President Trump’s pause on aid, and the gutting of the primary aid agency, could jeopardize the health of more than 20 million people worldwide, including 500,000 children, experts say.

The New York Times is interested in exploring how the response to loss may have changed in the last five years.

The study may suggest that other researchers should be less optimistic about the prospects for treating a range of other conditions with newer weight-loss drugs.