ネグレリア・フォーレリといえば脳を喰らうビールスというので悪名高い。ニューオーリンズで、これが水道を汚染したというので、水道水を飲むなと指示が出た。
BBC Brain-eating microbe: US city warned over water supply 27 Sep 2020
「Residents of Lake Jackson, Texas, have been warned about using tap water after a deadly brain-eating microbe was found in the city's public water supply.
Tests confirmed the presence of Naegleria fowleri in the system. The amoeba can cause an infection of the brain, which is usually fatal.」
ふつうはそこらの池や湖や…で感染するのだが、今回は水道水しか考えられない。で、水道水の塩素濃度を高めて対応。
「An investigation into the city's water supply began after a six-year-old boy contracted the microbe and died earlier this month, Lake Jackson City Manager Modesto Mundo told reporters.」
「Those infected with Naegleria fowleri have symptoms including fever, nausea and vomiting, as well as a stiff neck and headaches. Most die within a week.」
参照記事をいくつか挙げてあるが―2012年からの幾つかの記事を見ると、なんというか…だんだんと警戒水準が上がっていっている感じがする。
BBC Brain-eating amoeba: Warning issued in Florida after rare infection case 6 July 2020
BBC 'Brain-eating amoeba' found in water supply near New Orleans 31 July 2015
「US health officials have confirmed the presence of a 'brain-eating' amoeba in the water supply of several communities near New Orleans.」
「Officials have begun a 60 day "chlorine burn" to kill off the deadly pathogen.
Water from the tap is safe to drink, officials say, but should be prevented from entering the nose.」
この段階だと、水道水は飲んで大丈夫だよ？という記載がある。まあ、塩素濃度をしくじるとダメだというのは大前提なんでしょうが。
「During a screening of the water supply after the rediscovery of the amoeba, the Louisiana Department of Health and Hospitals (LDHH) found that chlorine levels were not being maintained at the level needed to kill off the dangerous organism.」
とまあ、水道水の塩素濃度を上げますよ、という。
「In 2013, a 4-year-old boy from St Bernard parish died after becoming infected with Naegleria fowleri after playing on an inflatable water slide.」
BBC Karachi: Brain-eating amoeba kills 10 9 October 2012
「A rare brain-eating amoeba is responsible for at least 10 deaths in the Pakistani city of Karachi in recent months, health officials believe.
The source of the parasite is not yet known, but it is thought victims may have been exposed to it when using water to rinse their nasal passages.」
カラチの例では、鼻腔を水で洗う習慣がいかんかったね、という訳で。
鼻から脳に行く、そんなコースは十分注意されてきたところ―抵抗力がある人はまず感染しないという常識もあったところ―今回は6歳の少年が水道水から―というので、ちょっと警戒の水準が違っちゃう。
BBC Brain-eating microbe: US city warned over water supply 27 Sep 2020
「Residents of Lake Jackson, Texas, have been warned about using tap water after a deadly brain-eating microbe was found in the city's public water supply.
Tests confirmed the presence of Naegleria fowleri in the system. The amoeba can cause an infection of the brain, which is usually fatal.」
ふつうはそこらの池や湖や…で感染するのだが、今回は水道水しか考えられない。で、水道水の塩素濃度を高めて対応。
「An investigation into the city's water supply began after a six-year-old boy contracted the microbe and died earlier this month, Lake Jackson City Manager Modesto Mundo told reporters.」
「Those infected with Naegleria fowleri have symptoms including fever, nausea and vomiting, as well as a stiff neck and headaches. Most die within a week.」
参照記事をいくつか挙げてあるが―2012年からの幾つかの記事を見ると、なんというか…だんだんと警戒水準が上がっていっている感じがする。
BBC Brain-eating amoeba: Warning issued in Florida after rare infection case 6 July 2020
BBC 'Brain-eating amoeba' found in water supply near New Orleans 31 July 2015
「US health officials have confirmed the presence of a 'brain-eating' amoeba in the water supply of several communities near New Orleans.」
「Officials have begun a 60 day "chlorine burn" to kill off the deadly pathogen.
Water from the tap is safe to drink, officials say, but should be prevented from entering the nose.」
この段階だと、水道水は飲んで大丈夫だよ？という記載がある。まあ、塩素濃度をしくじるとダメだというのは大前提なんでしょうが。
「During a screening of the water supply after the rediscovery of the amoeba, the Louisiana Department of Health and Hospitals (LDHH) found that chlorine levels were not being maintained at the level needed to kill off the dangerous organism.」
とまあ、水道水の塩素濃度を上げますよ、という。
「In 2013, a 4-year-old boy from St Bernard parish died after becoming infected with Naegleria fowleri after playing on an inflatable water slide.」
BBC Karachi: Brain-eating amoeba kills 10 9 October 2012
「A rare brain-eating amoeba is responsible for at least 10 deaths in the Pakistani city of Karachi in recent months, health officials believe.
The source of the parasite is not yet known, but it is thought victims may have been exposed to it when using water to rinse their nasal passages.」
カラチの例では、鼻腔を水で洗う習慣がいかんかったね、という訳で。
鼻から脳に行く、そんなコースは十分注意されてきたところ―抵抗力がある人はまず感染しないという常識もあったところ―今回は6歳の少年が水道水から―というので、ちょっと警戒の水準が違っちゃう。
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