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近期曾在污水下水道中驗出COVID-19病毒的RNA，表示病毒可以在糞便中存活，為避免廁所變成感染源，呼籲民眾蓋上馬桶蓋再沖水。（台北市政府提供）
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台北市政府的官方line中，於2021.07.21曾傳送相關訊息。並有中央社新聞報導（柯文哲：防廁所變成感染源 放下馬桶蓋再沖水）： https://www.cna.com.tw/news/ahel/202107210255.aspx

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MrOrz mark this message contains personal perspective
｜originally written by MrOrz
「下水道驗出新冠肺炎病毒」與「蓋上馬桶蓋再沖水」確實有各自的研究，但兩者之間沒有因果關係。

台灣與國外確實會透過污水監測，作為 COVID-19 是否在該社區盛行的指標之一，也可以幫助公共衛生相關的決策。

另外，也確實有研究指出，沖馬桶不蓋馬桶蓋確實會產生懸浮在空中的氣溶膠，上頭可能會帶有病原體；蓋上馬桶蓋之後，氣溶膠會稍微較少，但還是會由馬桶蓋與馬桶之間的縫隙中滲出。因此，研究者提出的解方是，應改善公共廁所的通風，避免氣溶膠累積。

Opinion Sources

【污水監測】
台灣的污水監測
https://www.bcc.com.tw/newsView.6412955
美國的污水監測
https://www.cdc.gov/healthywater/surveillance/wastewater-surveillance/wastewater-surveillance.html
澳洲的污水監測
https://www.health.nsw.gov.au/Infectious/covid-19/Pages/sewage-surveillance.aspx

【馬桶沖水】
2021/4/20 Flushing a public toilet? Don't linger, because aerosolized droplets do
https://www.sciencedaily.com/releases/2021/04/210420092847.htm

Flushing a public toilet? Don't linger, because aerosolized droplets do: Study explores flushing power to test risk of COVID-19 transmission

Because COVID-19 has been detected in urine and stool samples, public restrooms can be cause for concern. Researchers measured droplets generated from flushing a toilet and a urinal in a public restro

https://www.sciencedaily.com/releases/2021/04/210420092847.htm

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