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Recently, there has been a series of misinoculation incidents in Seoul and Pyeongtaek, Incheon, where the expired vaccine was vaccinated. University hospitals and general hospitals made a huge mistake.



Medical reporter Cho Dong-chan covered the reasons why these accidents occur and how to deal with them after a misinoculation.



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is a corona vaccine storage room at a respiratory clinic in Seoul.



[Kim Myung-sook / Head of Infection Control Team at Hana Otolaryngology Hospital: This is a vaccine-only refrigerator that only stores vaccines, but the temperature is actually being checked twice now.] The



temperature of the refrigerator is automatically entered into the computer for 24 hours and sent to the Korea Centers for Disease Control and Prevention.



The cold chain and vaccine delivery system are computerized, so why are vaccines that have passed their expiration date inoculated?



Pfizer vaccines, for example, can be stored for up to six months in a cryogenic freezer, or up to one month when taken out of the freezer at a public health center, diluted and delivered to a general refrigerator at each hospital.



Corona vaccination box.



The date of thawing, that is, the date the vaccine was diluted in the cryogenic freezer is August 27, and the shelf life is one month in the refrigerator, so the shelf life is written as September 27.



However, each bottle out of the box has only the December 2021 expiration date in the freezer.



If you take out bottles from multiple boxes with different expiration dates at once, you may miss the refrigerated expiration date on the boxes.



[Kim, Myoung - Sook / One ENT Hospital Infection Control Team Leader: when (to protect the expiration date) manually each day allocated, and until by giving away wearing would happen to the normal check at least three times a day -



a refrigerated shelf life for each end bottles Separate markings are required to prevent such accidents.



In New York, USA, 899 people were vaccinated with the expired vaccine.



Fortunately, none of them were harmed.



It was analyzed that this was because the vaccine bottle was sealed so that foreign substances or bacteria did not enter.



However, it is necessary to thoroughly manage the physical condition of the person who is wrongly vaccinated for at least one month.



Vaccines that have passed their expiration date may be less effective and are therefore re-vaccinated in the United States.



(Video coverage: Kim Hyun-sang, Gong Jin-goo, video editing: Lee So-young, CG: Shim Soo-hyun, Seo Hyun-joong)