Periodic Intensification of Routine Immunization

Countries employ a range of strategies to increase access to immunization services. Some of these approaches share features of both routine and campaign service delivery - i.e. activities that are marked by both periodic and intermittent intensified nature - similar to campaigns - with the objective of accelerating improvements to routine immunization coverage. Such activities are referred to as "periodic intensification of routine immunization" (PIRI).

This paper surveys a wide array of PIRI experiences, drawing on the fragmented documentation that exists at this time. It is based on a desk review of planning documents, guidelines, website information, data on the accomplishments of these campaigns (where available) and other gray literature, plus interviews and email communication with individuals from several countries where PIRI activities have been conducted.