None of the approved COVID-19 vaccines contain the live virus. Post-vaccine symptoms like fever, chills, muscle aches, etc., are signs that your body is building protection. Get more vaccine facts at mass.gov/CovidVaccineFAQ

Just hours ago, a CDC advisory committee vote unanimously to recommend COVID-19 vaccine booster shots for certain people with compromised immune systems.

Johnson & Johnson’s (J&J) COVID-19 vaccines may increase the risk of Guillain-Barre syndrome, warns US FDA*. Guillain-Barré syndrome is a rare and dangerous neurological condition. The autoimmune disease can cause muscle weakness and paralysis. About 13 mln people or about…

“SARS-CoV-2 and the Immune System” is the second video in the four-part series, “Understanding COVID-19.” In this series, Ragon Director Bruce Walker, MD, and Harvard postdoctoral fellow Zuri Sullivan, PhD, explain how scientist responded to COVID-19, from identifying the virus…