An executive order from President Trump freezes all mass communication from the Centers for Disease Control and Prevention unless it’s approved by the White House.

OneBlood is the first blood center to get full FDA approval to give high-titer COVID-19 convalescent plasma to those with COVID-19 who are also immunocompromised.

Scientific meetings were canceled, and research data on the bird flu outbreak was delayed, amid confusion over the directive.

A number of other health agencies are also operating without acting heads, including the FDA and the National Institutes of ...