I.H.C. クリニック


プールなどに使用されている水による感染について(CDCの報告)Outbreak Associated with Treated Recreational water(CDC Report)

アメリカ疾病予防管理センターが5月18日に、 “Outbreaks Associated with Treated Recreational Water-United States, 2000-2014″ を発表いたしました。

Michele C. Hlavsa, MPHを初めとする共同執筆者はアメリカの46州とプエルトリコにて2000~2014年までプールなどに使用する水の感染に関する情報を収集, この度調査結果を公表することになりました。 調査した15年間において493もの集団感染が発生し、27,219件を確認、8名が亡くなられています。今回の報告ではこれらの集団感染の原因はプールやスパなどの水質が管理されている所ですが、病原菌や水質管理の際に使用する薬物によって感染が発生しています。















Center for Disease Control and Prevention (CDC) issued “Outbreaks Associated with Treated Recreational Water-United States, 2000-2014″on May 18, 2018.

Michele C. Hlavsa, MPH et al. collected the date from 46 states and Puerto Rico during 2000-2014. During these years, 493 outbreaks associated with treated recreational water caused at least 27,219 cases and 8 deaths.  According to the study, outbreaks associated with exposure to treated recreational water can be caused by pathogens and chemicals in venues such as pool, hot tubs/spas, and interactive water play venues.

From this study, authors found the result that are below;

●493 outbreaks in 15 years (2000-2014)

●27,219 people sick and 8 people deaths linked to pools, hot tbs, and water playground

●Most outbreaks happen in hotel pools and hot tubs in the summer(June – August)

There are three thins to stay healthy in the water;

1.Do not swim with Diarrhea

2.Check the inspection score

3.Do not swallow the water

363 out of 493 outbreaks with confirmed infectious etiology.

1.212 out of 363 outbreaks were caused by Cryptospordium.  It causes predominantly gastrointestinal illness.

2.57 out of 363 cases were caused by Legionella.  It causes Legionnaires’ disease, a severe pneumonia, and Pontiac fever and so on

3.47 out of 363 cases were caused by Pseudomonas. It causes folliculitis and otitis externa.



CDC(Center for Disease Control and Prevention)





















493 outbreaks associated with treated recreational water during 2000-2014

157(32%) of the 493 outbreaks were occurred at Hotels

275(56%) outbreaks started during June and August

46(9%) outbreaks started in March



Public Health Officials from 46 states and Puerto Rico(2000-2014)

Total the 363 outbreaks with a confirmed infectious ethiology;

212(58%) of the 363 outbreaks were caused by Cryptosporidium.

57(16%) of the 363 outbreaks  were caused by Legionella.

47(13%) of the 363 outbreaks were caused by Pseudomonas.


The 363 outbreaks identified 24,453 cases;

21,766(89%) were caused by Cryptospordium

920(4%) were caused by Pseudomonas

624(3%) were caused by Legionella