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Cool Vaccines

by Eileen Moy last modified 2008-08-08 11:54
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Heat-sensitive labels can monitor the viability of life-saving vaccines during a power outage or for vaccination programs in the field, but we still need innovative technologies for storing and transporting vaccines.

Tech Awards Projects

Vaccine Vial Monitor

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Vaccines that prevent life-threatening childhood illnesses must be kept cool to remain effective. We feature PATH's heat-sensitive color labels for monitoring vaccines (white = viable; black = spoiled). There are three interactive venues that capture the challenges of keeping vaccines cool: 1)CENTRAL EXHIBITION-Avatars enjoy images from PATH and view a movie on vaccines and the vaccine vial monitor. 2)(To the left) URBAN CLINIC-A power outage ruins vaccines in a refrigerator, and raises awareness that power outages from rolling blackouts and unintentional outages due to natural disasters and energy overuse can occur anywhere, even in Silicon Valley. We pose a challenge to devise new ways for storing vaccines. 3)(To the right) VILLAGE--The avatar experiences the logistical difficulties of transporting vaccines to remote regions. There are three vaccine packs to choose from, each with advantages and disadvantages; 1-Single ice layer-cheap, heats up quickly; 2-Several layers of ice-lasts longer, more expensive, but heavier to carry; 3-Dry ice--optimal cooling, very expensive and not always available. The avatar selects a pack and carries it to a village and encounters harsh weather ranging from freezing cold to raging heat. After many trials, the avatar finds it hard to plan which pack is best without wasting resources. Global warming and deforestation seem to be causing harsher and unpredictable weather everywhere. PATH's color labels signal whether the vaccines have survived the journey, but ultimately we need to develop new and inexpensive ways for transporting vaccines.


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Solar-driven vaccine cooler

Posted by Kai Chu at 2008-08-05 17:39
Our challenge to the public to come up with better ways to store and transport vaccines in conjunction with PATH's heat-sensitive labels brings to mind a company in our hometown (Arcata, California) called Sunfrost. They produce efficient and solar-driven refrigerators. I discussed our project with them and they told me that one of their innovative products is a solar vaccine refrigerator. It weighs 200 lbs in its crate that transforms into a table. It's cost at over $1000 is still expensive, although it is being used around the world. There are pictures on Sunfrost's web site showing health workers transporting the refrigerator around. In Africa, the refrigerator is on the back of a large camel, flanked by many children who are helping to support it. In Nepal, the refrigerator is on the back of a sherpa, although its position looks very dangerous to the sherpa.

URL: http://www.sunfrost.com/vaccine_refrigerators.html

I was happy to see that many people are concerned about ways to keep vaccines cool in real life. Hopefully, Sunfrost or other innovators will be able to make a lighter and cheaper refrigerator.

solar cooling

Posted by Larry McGrail at 2008-08-06 18:44
Very interesting. There is also a picture of an African man crossing a river with two solar refrigerators. He is wading in the water and pulling the boat across by his hands. The solar refrigerators look like they are about to tip over. Are there vaccine vials actually inside the refrigerator? Is the man trying to bring the vaccines to a village. Are they worried about the vaccine vials breaking inside the refrigerator.

clinics not prepared for power outages

Posted by Eileen Moy at 2008-08-05 18:31
I spoke recently to Dr. Frank Fisher, medical director of a new health clinic in northern California. This clinic is a federally-designated rural health clinic as well as a California-licensed community clinic. His clinic acquired a vaccine refrigerator five months ago. Despite the stringent requirements for establishment of the clinic, Dr. Fisher had not encountered any federal or state requirement for keeping the vaccine refrigerator operating all the time. He confirms our suspicion that smaller clinics are not adequately prepared for power outages. He is worried about the viability of his vaccines during heavy winter storm. He had not thought about this problem before and appreciates our efforts to educate the public.

supported by a grant from the Gordon and Betty Moore Foundation icon Gordon and Betty Moore Foundation.