How COVID-19 Viral Vector Vaccines Work

The Vaccine Education Center at Children’s Hospital of Philadelphia is excited to announce the release of our second animation showing how COVID-19 vaccines work. This one shows how viral vector vaccines, such as the J&J and AZ vaccines, work.

Weakened adenoviruses can be used to deliver a vaccine. In COVID-19 vaccines, instructions to make the SARS-CoV-2 spike protein are delivered to educate the immune system, preparing it for future encounters with SARS-CoV-2. Learn more: http://COVIDVaccineAnswers.org