New vaccines are often evaluated in trials in which some participants receive a placebo. But not all studies can be designed ...

Post health reporters answered your questions on Robert F. Kennedy Jr.’s plans for public health and more during a live chat.

Most vaccines -- and boosters -- are injected directly into muscle tissue, usually in the upper arm, to kickstart the body's immune system in the fight against disease. But for respiratory diseases ...

With new testing requirements, it’s not even clear how new Covid or flu shots can be made available this fall.

The World Health Organization (WHO) Technical Advisory Group on COVID-19 vaccine composition, after meeting earlier this ...

FDA Commissioner Marty Makary said his agency plans to release a new framework for vaccine approvals in “coming days.” ...

Florida Republican Gov. Ron DeSantis signed a measure Thursday prohibiting local governments from adding fluoride to their ...

The federal judge’s ruling has nothing to do with the merits of Kobach’s scientifically dubious argument that the vaccine isn ...

Secretary Robert F. Kennedy Jr. testified during back-to-back hearings in the House and Senate on Wednesday for the first ...

Placebo testing has been part of the process since the 1940s. It’s unclear what additional measures would achieve — but it may slow development.

While the court decision does not define the scope of von der Leyen’s responsibility or impose any disciplinary or penal measures against her, it may trigger new cases against the Commission chief wit ...

The statement confused experts who said that vaccines aimed at new pathogens have always been tested this way. "That has been ...