In this short video, Dr. Hank Bernstein talks about immunity after COVID-19 vaccination. For information about COVID-19 and the vaccines, visit For information about all vaccines, visit

Dr. Paul Offit explains why COVID-19 vaccines are unlikely to cause a worsening of disease, called antibody-dependent enhancement. For information about COVID-19, visit For information about vaccines and vaccine safety, visit

Dr. Paul Offit explains why COVID-19 vaccines would not be expected to cause long-term side effects. For information about COVID-19, visit For information about vaccines and vaccine safety, visit