Developed jointly by UNICEF and WHO, the Immunization eLearning Initiative provides all immunization staff with access to training in areas deemed vital to the advancement of the Global Vaccine Action Plan and its vision that everyone live a life free from vaccine preventable disease.

The complexity of today’s vaccine formulations means that health workers can no longer assume that all liquid vaccines may be kept open and used for up to 28 days. In order for countries to minimize vaccine waste while at the same ensuring vaccine safety, they need to be able to determine which open vaccine vials can be safely used for extended periods of time. This course provides all immunization staff with a better understanding of the 2014 revision of the Multi-Dose Vial Policy and how to apply it in the real world.

Learning objectives

At the end of this course, you will be able to:

  • Explain why it was necessary to revise the multi-dose vial policy
  • List the four criteria for a vaccine vial to be used as a multi-dose vaccine
  • Explain how to apply the four criteria


This course is intended for UNICEF and WHO staff working in immunization across all levels of the organization (headquarters, regional, sub-regional, and country). It is also open to anyone within the organization interested in learning about immunization supply chain management, including consultants and partners working in support of immunization.


Approximately 15 minutes.


Interactive elearning module.


This course is an interactive course that engages learners through conversational questions and prompts. Learners can click on the actual policy document at any time during the course. Though there are questions in the course, there is no formal assessment.

Contact details

For questions or feedback on this programme, please contact  Ousmane Tamba Dia, Senior Immunization Specialist at