Apoorva Mandavilli

In an interview, Dr. Peter Piot recalled when he first saw the spindly virus under a microscope and reflected on a five-decade career spent fighting two deadly pathogens.

The networks also develop treatments and preventions for other infectious diseases and were instrumental in testing the Covid vaccine.

The agency has lost its independence and nearly a third of its staff, as Health Secretary Robert F. Kennedy Jr. and associates have tightened control.

Most member nations spoke in support of the declaration, but some rich countries had strong objections.

The agency’s weekly update escalates a political fight after Pennsylvania said two deaths had been caused by the virus.

In a legal deposition, the doctor, Theresa Long, compared immunizing service members against Covid to Nazi doctors experimenting on concentration camp prisoners.

Plus, a conviction in the Tupac Shakur murder trial.

Questioning a state’s investigation is highly unusual for the public health agency, but reflects tensions between the Trump administration and many states over health issues.

The city of Belém in northern Brazil was overwhelmed by an outbreak of dengue two years ago. An all-out municipal effort has reduced cases and may offer lessons to American cities.

President Trump is calling for immunizations for measles, mumps and rubella to be given in individual jabs in three different appointments instead of the standard combination shot.

Mr. Trump signed an executive order on Monday calling to scale back the number of vaccinations American children receive.

Dr. Schwartz, a deputy surgeon general in the first Trump administration, has publicly supported childhood vaccines.

New research also shows that children and high-risk adult populations have been particularly affected.

Eighteen Americans were isolated for weeks in a Nebraska quarantine facility after being exposed to the deadly virus on a cruise ship. Many found the experience traumatic.