Category Archives: data for decision making

World Immunization Week is a perfect time to reflect on global priorities and our commitment to the Global Vaccine Action Plan (GVAP). This framework guides the work of organizations around the world to reach every child with life-saving vaccines. It is also a way to measure our collective success. Accurately measuring our progress against GVAP targets is central to moving the needle globally, but we need to be confident in the data.

I recently heard a ministry official summarize the challenges to increasing immunization in an area suspected to have a high number of unimmunized children. This was very different from the story told by the numbers. The administrative coverage rates (based on census numbers and the reported number of administered vaccine doses) for the region were well over 100%. Surveys designed to provide a baseline comparison in the same area reported lower numbers, but the data still showed surprisingly high coverage – above 80%. People at this meeting quickly said they were ‘tired’ of hearing about coverage rates because of the well-known data quality issues. This frustration with data quality has echoed at nearly every immunization stakeholder meeting I’ve attended. Clearly inaccurate data is less meaningful – and less useful. It could be worse than no data at all.