
Immunocompromised may need a fourth Covid-19 shot, CDC says
CNN
People with health conditions that make them moderately or severely immunocompromised may get a fourth mRNA Covid-19 shot, according to updated CDC guidelines.
The CDC authorized a third dose for certain immunocompromised people 18 and older in August. It said a third dose, rather than a booster -- the CDC makes a distinction between the two -- was necessary because the immunocompromised may not have had a complete immune response from the first two doses.

The Supreme Court on Wednesday backed a series of decisions by the Food and Drug Administration to deny market access for flavored vaping products in a rare win for government regulators that may limit access to those products across the nation, though the justices sent the case back to an appeals court for further review.

Senior Russian negotiator Kirill Dmitriev is expected to visit Washington this week to meet with top Trump official Steve Witkoff for talks on strengthening relations between the two countries as they seek to end the war in Ukraine, according to a US official and two sources familiar with the plans.