Weekly Health Quiz: Vaccines, Antigens and Spike Proteins

1 If you've already had COVID-19, viral antigens may persist in your body that, when reactivated by a COVID-19 vaccine-induced immune response:

• Provide protection against COVID-19 variants
• Increase your risk of obesity
• Cause you to lose your sense of smell and taste
• Trigger inflammation and damage in tissues where the viral antigens exist

  The immune response reactivated by the COVID-19 vaccine may trigger inflammation in tissues where the viral antigens are present. Learn more.