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Corona 19 has changed its existing attitude that there is new evidence that the World Health Organization recognizes that it is not spread by air in normal living conditions.

A medical journalist Cho Dong-chan will explain what the new evidence is and if there are any differences in our rules.

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is an open letter from 239 scientists from 32 countries to the World Health Organization.

He emphasized that it is time to deal with the problem of corona 19's air propagation, and that it can also spread air in living environments such as homes and restaurants.

In two days, the World Health Organization accepted the scientists' challenge.

It was a step back from the standpoint of air propagation only in special hospital environments such as the use of a ventilator or endoscope.

[Venedate Allegranch/WHO Director of Infection Control: I understand that the amount of corona19 virus that can infect others can also spread through the air.] In

fact, 10 people from one spreader at a Chinese restaurant last year's holiday The group was infected, but after a detailed analysis of the video, three of them were separated from the preacher and found that there was no moment when the preacher had never touched the object touched and there were no droplets.


Experiments have also shown that in a poorly ventilated room, the Corona19 virus can float in the air for more than 3 hours.

[Lee, Geun-Hwa/Professor, Department of Microbiology, Hanyang University Medical School: An infected patient occurred even when it was 4.5m away from the bus. The fact that these things occurred at 4.5m should be considered as

airborne infection .] The more emphasis in airborne contamination is mask wearing and ventilation.

This is because wearing a mask and ventilating the air reduces the concentration of the floating virus in the air, reducing the likelihood of infection.

(Video coverage: Jang Un-suk, Video editing: Ho-jin Kim)