Often, when speaking with concerned parents about the “newness” of a vaccine or when explaining changes to vaccine recommendations due to changing epidemiology, it’s helpful to have some dates at your fingertips. Check out the latest article in the Vaccine Update for Healthcare Providers, which highlights a number of tools to help with timeline-related questions offered by Immunize.org, the Vaccine Education Center at Children's Hospital of Philadelphia (VEC), and The College of Physicians of Philadelphia. Be sure to subscribe to the Vaccine Update for Healthcare Providers to keep current.