This is a retrospective survey to collect selected safety data at 6 months following the 4th dose of Pentacel® in children residing in the Canadian Province of British Columbia who have received the 4th dose of the Pentacel® series before their 2nd birthday.
The purpose of this survey is to collect selected safety data.~Primary Objective:~To collect selected safety data at 6 months following the 4th dose of the Pentacel® series.