Vaccine Vial Monitors: FAQs
Vaccine vial monitors (VVMs) are small stickers that adhere to vaccine vials and change color as the vaccine is exposed to heat, letting health workers know whether the vaccine can be safely used for immunization. This fact sheet answers the most frequently asked questions regarding VVMs.
Author: PATH, World Health Organization
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275 KB PDF (Located at www.path.org)
Diseases/vaccines: Not disease/vaccine specific