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There are quite a few people who are uneasy about the use of bills, which is forced to go through a lot of people's hands these days to minimize contact with others. Banknotes are sterilized and sterilized everywhere, and the Bank of Korea keeps the bills in circulation for two weeks and then distributes them.

Reporter Dong-Kyun Seo.

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Namsan No. 3 tunnel.

Banknotes received by the receptionist as congestion charges are sterilized by placing them in a UV sterilizer.

As a change, hand the pre-sterilized money.

[Ahn Eun / Seoul Facilities Management Corporation, Director of Transportation Operations: We disinfect and pay the bills paid in consideration of the characteristics of the bills that go through the hands of many people.]

This is not the end.

Congestion tolls collected from three Namsan tunnels cost around 20 million won a day, and the money is secondly passed through an ion sterilization process to the bank.

In the case of the 50,000 won bill, the Bank of Korea keeps it in a safe for two weeks like self-isolation and sterilizes it at a high temperature of 150 degrees for distribution.

There are various money disinfection methods that have been used to dispel these concerns, while using it because it is unknown whether someone has touched it.

However, experts warned of excessive fear that viral infections through banknotes have never been officially reported.

[Choi Won-Seok / Professor of Infectious Medicine, Korea University: If there is a prerequisite for good hand hygiene, it does not mean that an infection is caused by contact with contaminated objects or the environment. Because the skin acts as a barrier ... .]

The most important thing is personal hygiene that does not directly touch the respiratory tract with a hand that touches objects, not just bills.

(Video coverage: Hyun-Cheol Yang, Video editing: Jeon Min-Gyu)