The packing and shipping of a third COVID-19 vaccine approved for use in the U.S. is underway. Johnson & Johnson’s single-dose shot will start going into Americans’ arms in a matter of days. Nearly 4 ...

With three coronavirus vaccines already approved for emergency use authorization in the U.S., how do the different available shots compare? Pfizer and Moderna's COVID vaccines have been available in ...

Despite a U.S. factory mixup, more Johnson & Johnson doses are becoming available in the U.S., marking the only single-shot vaccine option. So how effective is it and how does it compare to the Pfizer ...

(CNN) — The U.S. Food and Drug Administration authorized booster doses of COVID-19 vaccines made by Moderna and Johnson & Johnson Wednesday and also said any of the three authorized vaccines could be ...

PHILADELPHIA (WPVI) -- Later this week, the Food and Drug Administration, with a panel of advisers, will decide if booster shots for Moderna and Johnson & Johnson vaccines will be safe for the general ...