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A Vaccine Cold Chain Freezing Study in PNG Highlights Technology Needs for Hot Climate Countries

Emphasis has long been placed on keeping vaccines cold, with less attention devoted to prevention of vaccine damage from freezing. Published reports and field evidence now demonstrate that freezing of vaccines in the cold chain is commonplace, potentially resulting in the widespread delivery of vaccines whose potency has  been compromised. This article, published in Vaccine, reviews a study where vaccine vials were sent from a national vaccine store in Port Moresby, Papua New Guinea (PNG), to peripheral locations in the health system. The results, which found that all of the vials were exposed to freezing temperatures at some time, highlight the need for technological solutions to avoid vaccine freezing, particularly in hot climate countries.

Author: Wirkas T, Toikilik S, Miller N, Morgan C, Clements CJ

Published: 2006

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(Located at www.sciencedirect.com)

Citation: Wirkas T, Toikilik S, Miller N, Morgan C, Clements CJ. A Vaccine Cold Chain Freezing Study in PNG Highlights Technology Needs for Hot Climate Countries. Vaccine. 2006;25(2007)691-697.

Resource types: Peer-reviewed journal

Diseases/vaccines: Not disease/vaccine specific

Topics: Vaccine stabilization, Supply chain and logistics systems

Regions: Oceania