Overview
This guidance describes a systematic approach called the “Evidence to
Recommendation Process” (henceforth called “EtRProcess”) for use by
national immunization technical advisory groups (NITAGs). The process
described is based on the EtR Process used by the WHO Strategic Advisory
Groups of Experts on Immunization (SAGE) and other long-functioning
NITAGs, but has been adapted to fit the level of maturity of recently
established NITAGs, which often face limited human and financial
resources. Conducting a systematic literature review to collect evidence
on the benefits and harms of an intervention is intentionally not
included in the EtR Process described in this guidance. Instead NITAGs
with limited time and resources are encouraged to use systematic
literature reviews conducted by WHO SAGE or other long-functioning
NITAGs as an evidence resource.