Do COVID-19 Vaccines Cause Antibody-dependent Enhancement (ADE)?
Dr. Paul Offit explains why COVID-19 vaccines are unlikely to cause a worsening of disease, called antibody-dependent enhancement.
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Do COVID-19 Vaccines Cause Infertility?
Dr. Paul Offit explains why infertility is not a concern following COVID-19 or receipt of the COVID-19 vaccine.
Do COVID-19 Vaccines Disrupt the Immune Response?
Dr. Paul Offit discusses concerns about COVID-19 vaccines and the immune system.
Should I Still Get a COVID-19 Vaccine If I Was Previously Infected?
Dr. Paul Offit explains why people who were previously infected with SARS-CoV-2 should still get the COVID-19 vaccine.
Who Should Not Get the COVID-19 mRNA Vaccines?
Dr. Paul Offit talks about two groups of people who should not receive the COVID-19 mRNA vaccine.
Why Are Two Doses of the COVID-19 mRNA Vaccine Required?
Dr. Paul Offit talks about why getting the second dose of COVID-19 vaccine is important for protecting against moderate to severe disease.
What Are the Different Ingredients Being Used in the COVID-19 mRNA Vaccines?
Dr. Paul Offit talks about what ingredients are — and are not — in COVID-19 mRNA vaccines.
COVID-19 Vaccine Q&A with CHOP Immunology
A series of COVID-19 Vaccine Q&A with members of CHOP Immunology
Normal Lymphatic Anatomy and Flow Video
Watch this video of lymphatic flow and drainage from the Jill and Mark Fishman Center for Lymphatic Disorders at CHOP.
Giving an Insulin Injection Using a Pen
This video demonstrates how to give insulin using a pre-filled pen, including where and how to give the injection, supplies you’ll need, how to dispose of the used pen needle, and more. En español.