The Pfizer vaccine presents a shipping challenge because it requires ultra-cold storage at almost -94 degrees, which is colder than the temperature on Mars. UPS will ship it in boxes that feature two layers of dry ice, a thermal shipper designed by Pfizer to maintain the cold temperature, as well as a GPS and thermal monitor. The company also will have its own sensor in the package with the vaccine that monitors temperature and transmits information related to the package, as well as its own GPS monitor.
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