Planning principles for accelerated immunization activities: a joint WHO/UNICEF statement.

These guidelines are intended to highlight some broad principles concerning program acceleration. Since policies in the field of immunization are evolving so rapidly the intention is that they will be updated and revised as necessary. The guidelines are a supplement to, but not a substitute for, the training materials prepared by the Expanded Program on Immunization (EPI), World Health Organization, Geneva, which provide a more comprehensive guide to immunization program management.