Essential Programme on Immunization
The Essential Programme on Immunization aims to strengthen vaccine programmes, supply, and delivery, and ensure universal access to all relevant vaccines for all populations across the life course.
Catch-up vaccination

Catch-up vaccination

©WHO/Yoshi Shimizu
Vaccination at clinic in Siem Reap
© Credits

Timely vaccination is key to maintaining population immunity against vaccine-preventable diseases (VPDs), ensuring populations are fully protected against life-threatening illnesses as early as possible, and preventing large outbreaks of VPDs. However, scheduled vaccinations may be missed for a number of context-specific reasons (e.g. difficulty accessing health services and other health system barriers, health worker practices, stock outs, beliefs held by caregivers and community members about vaccination, etc.)

No one should miss out on the right to the protection that vaccines offer, simply because they are unable to access services in time.

A catch-up vaccination strategy (which includes a clearly defined catch-up vaccination policy and catch-up schedule) is an essential part of a well-functioning national immunization programme and should be implemented on a continuous basis.

Catch-up vaccination refers to the action of vaccinating an individual who, for whatever reason, is missing or has not received doses of vaccines for which they are eligible, per the national immunization schedule.

Catch-up vaccination can be conducted through regular routine immunization service delivery (fixed, outreach, mobile, school-based), periodic intensification of routine immunization (PIRI) activities, or through innovative local strategies that ensure individuals have the opportunity to receive routine immunizations for which they are overdue and eligible.

The importance of having a catch-up vaccination strategy is more pronounced during or following an emergency, when unavoidable disruptions may require additional specially planned catch-up efforts to address large immunization gaps.

Guidance for planning and implementing catch-up

WHO has developed guidance to assist national immunization programmes to establish or refine a catch-up vaccination strategy, as an essential component of the routine immunization programme.

Leave no one behind: guidance for planning and implementing catch-up vaccination
Purpose of this guidance: • To assist national immunization programmes to establish or refine a catch-up vaccination policy and catch-up schedule, as...

Monitoring and reporting of essential immunization catch-up

WHO Recommendations for Interrupted or Delayed Routine Immunization

Closing Immunity Gaps and Recovering Immunization Programmes

The Big Catch-Up: An Essential Immunization Recovery Plan for 2023 and Beyond
This document serves as the joint strategic description of this coordinated effort by WHO, UNICEF, and Gavi, the Vaccine Alliance, along with the Immunization...
Guiding principles for recovering, building resiliency, and strengthening of immunization in 2022 and beyond
Countries are encouraged to urgently close immunity gaps and recover immunization services while capitalizing on the opportunities from the pandemic response...
Closing immunization gaps caused by COVID-19
DRAFT – 11 August 2020

Catch-up Vaccination Videos

In collaboration with the Immunization Academy, WHO have developed the following short video lessons about catch-up vaccination:

Administering Catch-Up Vaccinations: https://watch.immunizationacademy.com/en/videos/807

Managing Multiple Injections: https://watch.immunizationacademy.com/en/videos/805

How to Record and Report Catch-Up Vaccinations: https://watch.immunizationacademy.com/en/videos/806

Video - Administering Catch-up Vaccinations
Video - Managing Multiple Injections
Video - How to Record and Report Catch-up Vaccinations