A new corona at a drinking party among friends

Even at a drinking party among friends, a series of new infections at meals New Corona August 1 16:40

Infection with the new coronavirus has continued to be frequently infectious at restaurants accompanied by entertaining since the emergency declaration was lifted, but recently it has become infected at dinners such as drinking parties among colleagues. Cases are also one after another.

Experts demand that basic measures be taken, such as avoiding a dense environment and thorough ventilation, as the conditions that make it easy to get infected at dinners in poorly ventilated stores are met.

Cases of being infected by a meal such as a drinking party have been reported all over the country. Based on the data released by the Tokyo Metropolitan Government, NHK has summarized the cases where the infection route is known in Tokyo. On a weekly average, the percentage of people infected by eating out was 9.9% for the first week starting on the 1st of last month, but it has been gradually increasing to 13.6% for the first week starting on the 22nd.

On the other hand, the percentage of people infected at restaurants with entertainment was 53.6% for the week starting from the 1st of last month, and 45.6% for the week starting from the 8th, but from 22nd. In 1 week, it was 23.4%, which is a small percentage of the total.

The route of infection of the new coronavirus is
▽"contact infection" that occurs when you touch your nose or mouth with the virus,
▽"splash infection" due to coughing or sneezing,
and
▽loud in a closed space with poor ventilation When talking or singing, it is said that there are three "micro droplet infections" due to tiny droplets of less than 5 micrometer = 5/1000 mm that come out of the mouth, but at the time of a meal It's easier to get up.

At the time of a meal, "contact infection" occurs when a virus is attached to the hand by sharing the same tableware with the infected person.

In addition, "splash infection" is said to occur within a range of about 2 meters, and when the RIKEN of Kobe City analyzes how it spreads indoors using the supercomputer "Togaku", it is when facing with a desk , Even if there was a partition high enough to cover the mouth, when one person coughed without a mask, it resulted in splashes on the face of the person in front. On the other hand, it has been found that if there is a partition that is higher than the height of the head, the splash can be stopped.

Furthermore, it is said that "micro splashes" drift in the air for a while in a tightly ventilated enclosed space, and even reach a place a little further away, which can cause symptoms such as coughing and sneezing during a dinner at a poorly ventilated store. Even if you don't have it, it is thought that you can get infected by micro droplets by removing the mask and talking. However, if you ventilate, you can discharge the micro droplets floating in the air.

At a meeting with experts who advise the Ministry of Health, Labor and Welfare on measures against the new coronavirus, it is necessary to avoid a dense environment, thoroughly ventilate, It is said that it is strongly required to take basic measures such as wearing a mask when talking.

Expert "Avoid meals with a large number of people, avoid as much as possible"

Regarding the fact that there are many cases of being infected by meals such as drinking parties within friends, Kazuhiro Tateda, the chairman of the Japanese Society of Infectious Diseases and Professor of Toho University, said, ``In the urban area, at first, restaurants such as entertainment were However, the phase has changed and it is beginning to spread throughout the city.At a drinking party, contact infections such as sharing tongs and chopsticks are likely to occur, and if you drink alcohol in a relaxed place, you will be alert. The risk of micro-droplet infection increases due to loss of voice and loud voice.”

As a measure required on that basis, ``Because I can not wear a mask when eating, the shop side should install acrylic plates on the table, ventilation using air conditioning, and thoroughly sterilize the guidelines such as hand disinfection. I think that the risks are fairly limited if you eat at a restaurant where the guideline is kept by a small number of people, not the food itself is bad, the risk is quite limited. I would like you to try to reduce the risk of infection as much as possible by avoiding meals with a large number of people who will end up as much as possible and not going to drinking parties if you feel sick.”