Using standardized tools to improve immunization costing data for program planning: The cost of the Colombian Expanded Program on Immunization.

Highlights: [•] We present a novel tool capable of estimating a country's total EPI costs. [•] The ProVac CostVac Tool is a user-friendly, spreadsheet-based tool. [•] “CostVac” is unique because it captures EPI costs at different administrative levels. [•] We describe the use of the tool in a pilot exercise on EPI costing in Colombia. [ABSTRACT FROM AUTHOR]