Vaccine Education Center
The Vaccine Education Center at Children's Hospital of Philadelphia provides complete, up-to-date and reliable information about vaccines to parents and healthcare professionals. We are a member of the World Health Organization's (WHO) Vaccine Safety Net because our website meets the criteria for credibility and content as defined by the Global Advisory Committee on Vaccine Safety. Learn more about the WHO’s Vaccine Safety Net.
Feature Article: Why Will It Take So Long to Make a Vaccine against COVID-19?
Find out how long it takes to make a vaccine under normal circumstances and what may change in the process of making a COVID-19 vaccine.