Booster shots are here — for some Americans, at least. US regulators have updated their recommendations as to who should get a third dose of Pfizer and Moderna's vaccines. The Food and Drug ...

Kids get the varicella vaccine when they're between 12 and 15 months old. They get a booster shot for further protection at 4 to 6 years of age ... Giving the vaccine within 3 to 5 days after exposure ...

The first stage booster returned to Earth about eight minutes after liftoff, touching down in the Atlantic Ocean on the drone ship "A Shortfall of Gravitas." It was the 15th launch and landing for ...