Dear Ghulam:
Please refer to the WHO website on the Effective Vaccine Management Initiative, where there a range of Standard Operating Procedures that may be helpful to you. I have attached to this mail the two that may specifically respond to your question: Using Vaccine Vial Monitors andMonitoring temperature exposure during vaccine transport
http://www.who.int/immunization/programmes_systems/supply_chain/evm/en/
WHO's recommendation would be check and note the status of VVM coloration both at issuance and receipt.
Kind regard,
Diana
WHO/EPI