New Vaccine Post-Introduction Evaluation - libdoc.who.int - World ...

1. Overview
1.1 Introduction
This post-introduction evaluation (PIE) tool provides a systematic method for
evaluating the impact of the introduction of a vaccine on the existing immunization
system in a country. The PIE tool is designed for immunization managers in countries
that have introduced a new or underutilized vaccine. WHO recommends that all
countries which have introduced a new vaccine conduct a PIE. Conducting a PIE is
not a new concept, and there are several examples of evaluations of Hepatitis B (HepB)
and Haemophilus influenzae type b (Hib) vaccine introductions — those experiences
have been incorporated into this tool. The purpose of the current tool is to provide a
systematic method of performing the evaluation, that is comparable across countries,
to facilitate the sharing of experiences. Numerous WHO and UNICEF guidelines
and operational manuals have been consulted in the preparation of the tool, which is
suitable for evaluation of all new vaccines but will require revision for each country’s
individual circumstances, and for the different vaccine formulations and presentations.
This manual consists of an overview of the PIE, a description of what needs to be
evaluated and what the evaluator should be looking for, and an explanation of how to
synthesize the data and present the findings.
1.2 What are the goals of the manual?
The manual has four major objectives.
1) To provide health ministries and immunization partners with user-friendly tools
to conduct a comprehensive evaluation of the impact of the introduction of a
new vaccine on their immunization programmes.
2) To provide recommendations for rectifying typical problems associated with the
introduction of a new vaccine.
3) To provide guidance for analysis of data collected during the evaluation.
4) To provide a template for a final report.
WHO/IVB/10.03
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