三级aa视频在线观看-三级国产-三级国产精品一区二区-三级国产三级在线-三级国产在线

US EUROPE AFRICA ASIA 中文
World / US and Canada

Legionnaires' disease kills 11 in Canada

(Xinhua) Updated: 2012-09-04 13:52

OTTAWA - A deadly seven-week-long outbreak of Legionnaires' disease has claimed 11 lives in Quebec City, the capital of Canada's French-speaking province Quebec, local health authorities announced on Monday.

According to public health officials, the number of infections in Quebec City has also risen to 173 from 158 last Friday. It is believed that the new cases have developed over the last 10 to 15 days due to an incubation period of 2 to 10 days.

The average age of the 11 people who recently died in the outbreak was 77, according to Quebec City's regional public health agency, which hopes to identify the source of the bacteria by mid- September.

The city authorities plan to inspect and disinfect at least 100 rooftop-cooling towers where the deadly bacteria are thought to be passed through air-conditioning systems and be vented outside as mist.

The Quebec provincial government has called for a public inquiry into the outbreak of the non-contagious Legionnaires' disease, which normally affects men, people over the age of 50, smokers, those with a history of heavy drinking, and those with weak immune systems or chronic debilitating illnesses.

Health officials believe that the current outbreak of the disease -- one of the largest in the history of the province that normally sees only two to three cases in an outbreak -- is now under control.

A government-commissioned report released in 2010 found that the number of cases of the disease more than doubled to 51 in 2007 from 24 in 1997, while another report recommended more stringent regulations for building-ventilation maintenance.

Legionnaires' disease is a potentially fatal form of pneumonia known as legionellosis. It acquired its name from the bacterium Legionella pneumophila, which was first identified as the cause of an outbreak of severe pneumonia at an American legionnaires' convention in Philadelphia in July 1976.

Human infection normally occurs through inhaling an aerosol containing Legionella bacteria. Although no vaccine is currently available, the disease can be treated with antibiotics.

According to the World Health Organization, Legionella bacteria are commonly found in lakes, rivers and other bodies of water, and thrive in warm water and warm damp places at between 20 and 50 degrees Celsius. They are also found in man-made facilities such as air-conditioning cooling towers.

Trudeau visits Sina Weibo
May gets little gasp as EU extends deadline for sufficient progress in Brexit talks
Ethiopian FM urges strengthened Ethiopia-China ties
Yemen's ex-president Saleh, relatives killed by Houthis
Most Popular
Hot Topics

...
主站蜘蛛池模板: 国产黄网在线 | 香蕉97| 亚洲尹人香蕉网在线视颅 | 亚洲午夜久久久久久91 | 久久综合社区 | 免费看欧美成人性色生活片 | 国产亚洲精品aa在线观看 | 久久婷婷成人综合色 | 成人免费无遮挡做性视频 | 国产福利在线观看精品 | 亚洲综合色婷婷中文字幕 | 日本xxwwwxxxx18| 国产小视频免费观看 | 一级做a爰片欧美一区 | 亚洲成人18 | 国产成人www免费人成看片 | 96精品专区国产在线观看高清 | 免费高清特级毛片 | 国产性tv国产精品 | 欧美精品日韩一区二区三区 | 成年美女毛片黄网站色奶头大全 | 国产一级免费在线观看 | 亚洲欧美日韩国产综合高清 | 91精品国产综合久 | 欧美啪啪网址 | 91精品国产高清91久久久久久 | 黄色大片网站在线观看 | 啪在线观看 | 中文字幕亚洲精品第一区 | 日本高清不卡二区 | 外国成人xxx在线视频 | 成人爽a毛片在线视频 | 免费日本一区 | 免费国产成高清人在线视频 | 99热热热| 色花堂国产精品第二页 | 国产精品手机在线亚洲 | 免费高清精品国偷自产在线 | 麻豆视频免费入口 | 一级无遮挡理论片 | 国产精品国产亚洲精品不卡 |