2010年12月31日金曜日

USA300

 メチシリン耐性黄色ブドウ球菌(MRSA)が英王室領マン島で見つかり、
同島政府の保健当局が発表した。入院患者に院内感染などを起こす
従来のMRSAと異なり、若く健康な人に感染しやすい特徴がある。
 発表によると、このMRSAは「USA300」と呼ばれる型。メチシリンや
その系統の抗生剤が効かず、症状がかなり重くなる場合もある。

院内感染ではなく、市中感染型。
他のバクテリアとのDNAを共有することにより、突然変異でMRSAになった
ようだ。純粋な突然変異なのか、個別の薬剤に耐性を持つDNAを共有して
MRSAになったかは不明。
多剤耐性菌を振りまいている医師もいたが、マン島ではそう言うことは
なさそうだ。
日本の医療関係者が、多剤耐性菌の終息宣言を出せないとの記事を読んだが、
未だに終息宣言の報道は見当たらない。

耐性菌感染


---英マン島で新型耐性菌 プールや温泉で感染拡大タイプ---
2010年12月24日
http://www.asahi.com/health/news/TKY201012240102.html

 【ワシントン=勝田敏彦】スポーツジムやプール、温泉で主に感染が広がるメチシリン耐性黄色ブドウ球菌(MRSA)が英王室領マン島で見つかり、同島政府の保健当局が23日、発表した。入院患者に院内感染などを起こす従来のMRSAと異なり、若く健康な人に感染しやすい特徴がある。
 発表によると、このMRSAは「USA300」と呼ばれる型。メチシリンやその系統の抗生剤が効かず、症状がかなり重くなる場合もある。 MRSAは人の皮膚やのどなどにいる菌。病気で免疫力が落ちた患者は傷口などを通じて感染し炎症を起こす。敗血症などで死に至る場合もある。USA300のようなタイプは、健康な人も傷口から感染すると発症する「市中感染型」だ。
 過去に同島以外でも見つかっており、スポーツ施設が閉鎖されたり、感染した選手が競技会で失格になったりしたことがあるという。当局は、運動器具を消毒したり、他人が使ったタオルの共有を避けたりするよう呼びかけている。

 広島大学大学院の菅井基行教授(細菌学)は、「USA300は国内でも見つかっている可能性がある。医療従事者は気をつけるべきだが、効くタイプの抗生剤はある。一般の人は神経質になる必要はないと思う」と話している。


---New strain of MRSA detected in the Isle of Man---
Date Posted: 24/Dec/2010 09:18
By: John Gregory
http://www.isleofman.com/News/article.aspx?article=31994

A SMALL number of cases of a new strain of Meticillin-Resistant Staphlococcus aureus (MRSA) which affects young, fit and healthy people, have been detected in the Island.

MRSA USA 300 - like all strains of MRSA - is resistant to many antibiotics and causes infections, some of which can be very serious.

However, unlike other strains of MRSA, the USA 300 strain predominantly affects young, fit and healthy people and is predominantly transmitted in sporting facilities, gyms, swimming pools and spas.

Outbreaks of MRSA USA 300 has led to the closure of sporting facilities and gymnasiums and the disqualification of some athletes across the world.

The Island's Public Health Directorate wants to ensure that further spread of this strain is prevented and has produced posters, booklets and leaflets promoting awareness and public advice.


---New superbug found on Isle of Man
UKPA 20101224
http://www.google.com/hostednews/ukpress/article/ALeqM5iuUgIJ7UVIkjueBT1Ma6WO3qOHSQ?docId=N0325181293198558944A

A new strain of the superbug MRSA has been detected on the Isle of Man, health bosses have said.

The island's Department of Health confirmed a small number of cases of a bacterium called MRSA USA 300.

It said that, unlike other strains of MRSA, it predominately affects young, fit and healthy people.

The department added it was mainly transmitted at sports centres, gyms, swimming pools and spas, was resistant to many antibiotics and could cause serious infection.

Dr Katie Laird, a senior lecturer in pharmaceutical microbiology at Leicester's De Montfort University, said: "Bacteria are particularly good at adapting to their environment and through mutations in their DNA, which they are able to share with other bacteria, they can become resistant to antibiotics that are being utilised in healthcare environments.

"The new antibiotic resistant strain of MRSA USA 300 that has been isolated in the Isle of Man is unusual in that it affects the young, fit and healthy and is associated with sporting facilities rather than the hospital environment."

Health chiefs on the Isle of Man have produced and distributed posters, booklets and leaflets in a bid to curb further spreading of the strain.

Managers and coaches of all sporting activities and health clubs on the island have been invited to a presentation on the subject in Douglas next month.


---New MRSA strain found in Isle of Man---
23 December 2010 Last updated at 21:52 GMT
http://www.bbc.co.uk/news/world-europe-isle-of-man-12072292

A new strain of the superbug MRSA has been found in the Isle of Man, the Department of Health (DoH) has confirmed.

The DoH said it had recently detected a small number of cases of a bacterium called MRSA USA 300.

The strain mostly affects young, fit and healthy people, is transmitted in sports centres, gyms, and pools and can cause serious infection, the DoH said.

Like all strains, it is resistant to many antibiotics, it added.

Dr Katie Laird, senior lecturer in pharmaceutical microbiology at De Montfort University, said: "Bacteria are particularly good at adapting to their environment and through mutations in their DNA, which they are able to share with other bacteria, they can become resistant to antibiotics that are being utilised in healthcare environments."

The DoH has produced posters, booklets and leaflets about the new strain, to try to prevent it spreading further.

There will also be a presentation at Keyll Darree Education and Training Centre in Strang, Douglas, on 17 January.

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