Find out how different vaccines for the coronavirus cause your body to create antibodies that fight the virus.

Moderna is asking American regulators to allow emergency use of its COVID-19 vaccine. It says its final results show the vaccine is 94% effective. The drug maker says it had 196 COVID-19 cases so far ...

KALAMAZOO, Mich. -- Even though U.S. health officials authorized the emergency use of Pfizer's COVID-19 vaccine, getting the pandemic under control will take time and effort. One of the biggest steps ...

Questions about the COVID-19 shot abound as federal recommendations shift and medical groups issue clashing guidance.