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Various attempts have been made to develop corona vaccines, one of which is plasma treatment. This remedy can be researched and developed only after the blood of the healer is collected.

Reporter Nam Joo-hyun met a cure for blood for the first time.

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[Corona 19 Cured: No smell?]

He is a 20-year-old cured person who lost Corsage 19 and lost sense of smell and taste.

I have been cured, but I am receiving treatment because my sense of smell and taste have not returned.

[Corona 19 Cured: I still can't feel the smell and taste. The only thing that smells stimulating.]

This cured man was forced to return to foreign life in a hurry because of the Corona 19 epidemic, and was confirmed in the quarantine process and was isolated in a life treatment center for over three weeks.

I suffer from side effects that the senses of smell and taste decrease, but I decided to donate blood to develop a plasma treatment.

[Corona 19 Curer: I'm glad if anyone gets okay with my tiredness. If even one person is okay.]

Earlier, a plasma treatment from a recovering patient was administered to two other patients at a Korean university hospital to see the therapeutic effect. Currently, studies are underway to make standardized plasma treatments by concentrating antibodies in the blood of a cured person.

[Choi Won-suk / Professor of Infectious Medicine, Ansan Hospital, Ancient University: Applicable to many people, it is standardized and can be used as a medicine, so it can be said to be a step further than recovery plasma.]

Expectations for plasma treatment are high, but the effects are still mixed.

One Chinese study failed to lower the mortality rate of severely ill patients, while another study found that four out of five seriously transfused patients discontinued ventilation or Ekmo treatment.

The health authorities have asked for the participation of the cures, saying that 120 donors need to donate blood for clinical trials of plasma treatments.

(Video coverage: Hojun Choi, Video editing: Hyeyoung Choi)