Vaccine Management Handbook: How to Develop a Repair and Maintenance System for Cold Chain Equipment 1 March 2017 | Guidance (normative) Download (610.3 kB) Overview This module of the WHO Vaccine Management Handbook (VMH) introduces the policy, technical, material, budget and management requirements of an effective cold chain equipment maintenance and repair system. Number of pages 40 Reference numbers WHO Reference Number: WHO/IVB/17.05 Copyright