Pfizer overcomes the problem of keeping Corona vaccine below -70 degree by manufacturing cold chains

Cold chains are the method used by Pfizer to overcome the problem of storing its new vaccine at a temperature that cannot be tolerated by regular refrigerators, as scientists faced the problem that the vaccine must maintain its effectiveness at 94 degrees Fahrenheit or 70 degrees Celsius, and in this report we learn about the method that it followed The company to overcome this matter.

Cold chains keep the Pfizer vaccine

According to the “Business Insider” website, Pfizer has an area of ​​land the size of a soccer field in Kalamazoo, Michigan as a vaccine shipping hub, complete with 350 large fridges, the Wall Street Journal reported.

This is only the first part of the “cold chain” of a vaccine, and it’s the critical multi-part pipeline that will keep injections cooled and ready to go.

Many places in the United States indicate that they are not fully prepared for the success of this series of vaccines. Some hospitals are rushing to purchase extremely cold freezers to keep the vaccines at an appropriate temperature.

Here’s what should go down the cold chain in order to finally get the coronavirus vaccine.

Many vaccines have to be kept cool for them to work properly

And vaccines need dry ice. If doctors or carriers mistakenly heat the vaccine too much before using it on a person, this could damage the vaccine.

Not all vaccines thrive at the same temperatures Many of the most common vaccines, including polio, measles and tetanus vaccines, all work well in the refrigerator, with temperatures ranging from 35-46 degrees Fahrenheit (2-8 degrees Celsius).

But a company Pfizer She says her new coronavirus vaccine must be kept at -94 degrees Fahrenheit (-70 degrees Celsius), in order to protect the vaccine’s effectiveness.

The vaccine would probably do well at higher temperatures than that, but scientists were in a hurry to produce the vaccine they didn’t know for sure.

And it must be shipped on dry ice, as the company has developed a special bag with dry ice that can keep its vaccines safe for 10 days, but this may not be enough time, especially since the multi-vaccination course requires two vaccinations, three weeks apart.

The two-dose vaccination course, which the company declared is more than 90% effective in preventing corona in the late stages of human trials earlier this week, can obtain emergency approval from the US Food and Drug Administration within weeks, but the vaccine must be maintained. So cold that the company is ready to ship it in dry ice bags (designed to stay cold for 10 days) and equipped with trackers GPS Which tracks its temperature.



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