http://www.paho.org/English/HVP/HVI/hvp_immunsafety.htm

This document provides general guidelines to effectively manage vaccine safey issues. Information is intended for health workers and public healh practioners and is not meant to be a comprehensive guide to immunization. Chapters include: Vaccine Quality and Safety, Investigation of Events Attributed to Vaccination, Communication About Immunization Safety Concerns, and Education About Immunization Safety. Full text is available in PDF format, Introduction in HTML.