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uchida_kawasaki
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内田
@uchida_kawasaki
2020.8.19 韓国スタバ、ソウル近郊店の50人コロナ感染で席数減やマスク推奨 - ロイター jp.reuters.com/article/health…
2020-08-24 18:00:16
内田
@uchida_kawasaki
引用＞韓国の公衆衛生当局はスターバックス店舗での感染拡大を調査中だが、感染者がマスクを着けておらず、店内も適切な換気がされていなかった可能性があると述べている。
2020-08-24 18:00:3850人以上は、一次感染だけでなく二次感染以降も含めての数値
天気は雨。集団感染が発生した二階の窓ははめ殺しだったとの事
Eric Feigl-Ding
@DrEricDing
📍IMPORTANT Starbucks outbreak in South Korea 🇰🇷 reveals a lot: A #COVID19 infected 30 year old visited Starbucks for 2 hours➡️ then infected 56 others who visited. Likely related to 6 recirculating air conditioners. 2nd Floor hotspot. Suggests aerosols🧵 insight.co.kr/news/299857 pic.twitter.com/ekVDLGhdD9
2020-08-23 18:20:25
拡大
Eric Feigl-Ding
@DrEricDing
2) another article states 5 AC units and 2.5 hours: “was sitting right in front of one of the five air conditioners installed on the ceiling of the second floor of the store, and had a conversation with an acquaintance for about 2 hours and 30 minutes.” cm.asiae.co.kr/article/202008…
2020-08-23 18:24:28
Eric Feigl-Ding
@DrEricDing
3) The other report states 27 people who visited the Starbucks branch visited were first confirmed. The 54 includes secondary and tertiary infections. “As of August 18th, at least 54 people have been confirmed to have been associated with secondary and tertiary infections.”
2020-08-23 18:25:29
Eric Feigl-Ding
@DrEricDing
4) “The quarantine authorities believe that the aerosol (air containing fine saliva) discharged while A was talking at a seat near the stairs in the corner of the store on the second floor was spread throughout the store by the air conditioner wind.”
2020-08-23 18:26:45
Eric Feigl-Ding
@DrEricDing
5) “It has been confirmed that all of the primary infections identified so far have stayed at the second floor store at this time. Among the confirmed cases, there were also elementary school students who were in a store on the first floor and used the toilet on the second floor”
2020-08-23 18:27:43
Eric Feigl-Ding
@DrEricDing
6) “so the quarantine authorities believe that a very strong virus was spread quickly through the wind of an air conditioner. there are voices of concern that the use of air conditioners has increased due to the end of the long rainy season and the heat wave has come in earnest”
2020-08-23 18:29:16
Eric Feigl-Ding
@DrEricDing
7) “and that ventilation is difficult in some facilities, making it difficult to comply with these guidelines. In addition, it is pointed out that even if there is a guideline, a strong recommendation from govt should be accompanied as it is a matter for companies to cooperate.”
2020-08-23 18:29:46
Eric Feigl-Ding
@DrEricDing
9) “Even if it is not, it is possible to propagate droplets of 2m or more in a closed space, and it is possible to propagate through hand contact and other public facilities. ***Taking off a mask in an indoor space is all dangerous behavior***, and please minimize those parts."
2020-08-23 18:32:06
mm
@tyonarock
韓国スタバのコロナアウトブレイク （韓国語をGoogleで翻訳） 30代のコロナ陽性の女性が約2時間スタバの2階に滞在。その後56人が陽性確認された。6つのエアコンが動作しておりエアコンによる感染では？と。4人のスタッフはKF94マスクと手袋をしており誰も感染しなかった。 m.insight.co.kr/amp/news/29985…
2020-08-23 21:47:33
South Korea's responses to stop the COVID-19 pandemic - American Journal of Infection Control https://www.ajicjournal.org/article/S0196-6553(20)30360-6/fulltext
Open AccessPublished:June 06, 2020DOI: https://doi.org/10.1016/j.ajic.2020.06.003
呼吸器内科医＠
@neznezxmail
室内循環エアコン、換気不良空間+多人数のAirborne Transmissionと推測しますが、KF94 はフィッティングは悪そうですが、防御に寄与していますね。記事は読めませんが参考になりました。ありがとうございます😊 twitter.com/tyonarock/stat… pic.twitter.com/WAOnSS69Vj
2020-08-24 01:29:33
拡大
拡大
呼吸器内科医＠
@neznezxmail
全く仰る通りです。ありがとうございます。リツイートさせていただきます☺️ 三密は大切な概念ですが、いかに空間内の人数を少なくしても、「換気不良空間」ならば意味がありません。 twitter.com/adultspotdiffe…
2020-08-24 12:36:53