久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

  Home>News Center>World
         
 

Airborne SARS transmission possible -- study
(Xinhua)
Updated: 2005-03-24 10:20

Two new studies present evidence that the virus causing severe acute respiratory syndrome (SARS) may spread through the air, not just through direct contact with contaminated water droplets as previous research had shown, the Infectious Diseases Association of America (IDSA) reported on Wednesday.

SARS coronavirus was detected in the air in a patient's room during the 2003 outbreak in Toronto, according to the Canadian study. The Hong Kong study shows patients in hospital bays near a SARS patient had a much higher infection rate than patients in distant bays, consistent with the possibility of airborne SARS transmission.

In the Hong Kong study, which focused on the 2003 SARS outbreak at the Prince of Wales Hospital, 41 percent of patients admitted to the ward in which the first SARS patient was staying became infected.

Proximity to the bed of the first case seemed to be strongly linked with two-thirds of patients in the same bay infected and half of patients in an adjacent bay were infected with SARS, while only 18 percent of patients in distant bays were infected.

The researchers at the Chinese University of Hong Kong speculated that the increased risk of infection with closer proximity to the index SARS case suggests airborne transmission. Although they do not have "direct proof" of airborne transmission.

"No other known routes of infectious diseases transmission could adequately explain the spread of the disease in the outbreak, and hence we feel that the evidence is quite strong," the researchers wrote.

The Canadian research was conducted during the SARS outbreak in Toronto in March 2003. The results mark the first experimental confirmation of the presence of the SARS virus in the air of an infected patient's hospital room.

The authors cautioned that their results do not document any cases of airborne transmission of the SARS virus from one person to another, only the dissemination of the virus from an infected patient to the air, via breathing or coughing.

During the outbreak in Toronto hospitals, health care workers became infected with the virus despite observance of strict infection control precautions. The investigators wondered whether environmental contamination of hospital air or surfaces could explain the ongoing risk of SARS coronavirus transmission to health care workers.

To answer this question, they collected patient information and environmental samples from the SARS units of four Toronto hospitals.

SARS coronavirus was detected in the air in one of the four rooms tested. The researchers also detected virus in four of 85 surface samples taken from frequently touched surfaces, highlighting the importance of strict adherence to infection control precautions to prevent SARS coronavirus transmission in the health care setting.

An editorial accompanying the Toronto study, by Tommy Tong of Princess Margaret Hospital in Hong Kong, China, emphasized the scientific significance of discovering SARS coronavirus in the air in a patient's room.

"Although the possibility of airborne dissemination of SARS coronavirus has been controversial," he wrote, "this important work shows beyond doubt that SARS coronavirus aerosol generation can occur from a patient with SARS."



 
  Today's Top News     Top World News
 

'Three-good' student system under revision

 

   
 

Japan's bid for UNSC seat opposed

 

   
 

Beijing unveils security plan for Olympics

 

   
 

Hu: Nation willing to restart nuke talks

 

   
 

EU official calls China embargo 'unfair'

 

   
 

Watchdog investigates baby oil fears

 

   
  Pressure mounts on North Korea for nuclear talks
   
  Arab leaders relaunch peace offer
   
  At least 14 dead in US refinery blast
   
  UK troops set to stay in Iraq until 2006
   
  Annan's son faces fresh allegations in UN scandal
   
  Sharon overcomes key hurdle to Gaza pullout
   
 
  Go to Another Section  
 
 
  Story Tools  
   
  News Talk  
  Are the Republicans exploiting the memory of 9/11?  
Advertisement
         
久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

    欧美黄网在线观看| 亚洲综合欧美激情| 欧美在线aaa| av一区二区三区免费观看| 婷婷丁香激情网| 高清欧美精品xxxxx| 三级黄色片免费观看| 无码aⅴ精品一区二区三区浪潮 | 青青草国产精品视频| 日韩av自拍偷拍| 欧美综合在线观看视频| 亚洲国产精品无码观看久久| 午夜免费一级片| caoporn超碰97| 尤物av无码色av无码| 美女在线免费视频| 日本中文字幕观看| 免费裸体美女网站| 又粗又黑又大的吊av| 51xx午夜影福利| www.桃色.com| 可以看污的网站| 欧美日韩亚洲自拍| 日韩av在线综合| 777av视频| 日韩a级黄色片| 中文字幕第一页亚洲| 日本黄大片一区二区三区| 日本www高清视频| 116极品美女午夜一级| www.好吊操| 人人妻人人澡人人爽欧美一区 | 97国产精东麻豆人妻电影| 青青青青在线视频| 成人国产一区二区三区| 91免费视频黄| 亚洲成年人专区| 在线播放免费视频| 在线观看av免费观看| 911福利视频| 奇米影视四色在线| 国产探花在线看| 思思久久精品视频| 手机在线国产视频| 欧美日韩久久婷婷| 免费观看黄色大片| 日本一道在线观看| 欧美高清中文字幕| 日本欧美黄色片| 人妻久久久一区二区三区| 男人和女人啪啪网站| 黄色免费观看视频网站 | 欧美成人手机在线视频| 91国内在线播放| 五月天丁香花婷婷| 国产成人免费高清视频| 国产亚洲精品久久久久久久| 欧美性潮喷xxxxx免费视频看| 日韩 欧美 视频| 又粗又黑又大的吊av| www.国产区| 最新免费av网址| 一区二区三区四区免费观看| 国产成人生活片| 亚洲熟妇av日韩熟妇在线| 成人在线激情网| 狠狠操狠狠干视频| 大桥未久一区二区三区| 中文字幕日韩精品无码内射| 无码中文字幕色专区| 免费av网址在线| 午夜啪啪小视频| 国产成人生活片| 97av视频在线观看| 潘金莲激情呻吟欲求不满视频| 99亚洲精品视频| 男女视频网站在线观看| 免费黄色一级网站| 1314成人网| 久色视频在线播放| 一个色综合久久| 毛片av在线播放| www.xxx亚洲| av磁力番号网| 欧美日韩激情视频在线观看| 五月天激情播播| 日韩亚洲欧美视频| 成人免费xxxxx在线视频| 特级黄色录像片| 欧美日韩中文在线视频| av中文字幕网址| 97成人在线免费视频| 天天做天天干天天操| 国产 日韩 亚洲 欧美| 日本中文字幕观看| 国产午夜大地久久| 在线观看中文av| 国产91美女视频| 桥本有菜av在线| 乱子伦视频在线看| 成人短视频在线观看免费| 日日摸天天爽天天爽视频| 日本一二三区视频在线| 蜜桃免费在线视频| 一二三四视频社区在线| 亚洲综合伊人久久| 黄色片一级视频| h无码动漫在线观看| 日本黄大片一区二区三区| 欧美日韩不卡在线视频| 天天综合天天添夜夜添狠狠添| www.av中文字幕| 日韩视频在线免费播放| 日本美女高潮视频| 国产资源在线视频| 日韩欧美一级在线| 91精品视频国产| 中文字幕视频在线免费观看| 国产freexxxx性播放麻豆| 天天久久综合网| jizz欧美激情18| 噜噜噜久久亚洲精品国产品麻豆| 亚洲天堂第一区| 久久久精品高清| 国产福利一区视频| av免费观看大全| 久久www视频| 亚洲高清在线不卡| 香蕉视频禁止18| 国产成人亚洲精品无码h在线| 久久综合久久网| 毛片在线视频观看| 日韩国产精品毛片| www.亚洲自拍| 日本77777| 污视频网址在线观看| 亚洲xxxx2d动漫1| 久草精品在线播放| 欧美在线观看成人| 人妻少妇精品无码专区二区| 日本a级片在线播放| 女人床在线观看| 神马午夜伦理影院| 欧美美女黄色网| 国产一级大片免费看| 国产91视频一区| 黄色网在线视频| 日韩精品一区二区在线视频| 亚洲天堂第一区| 精品人妻大屁股白浆无码| 久久av喷吹av高潮av| 看一级黄色录像| 粉嫩av一区二区三区天美传媒| 裸体裸乳免费看| www婷婷av久久久影片| 男人草女人视频| 男女激情免费视频| 久久久久久免费看| 欧美a v在线播放| 国产女女做受ⅹxx高潮| 久久久久久久久久久久久久国产| 亚洲熟妇av一区二区三区| 亚洲国产精品久久久久爰色欲| 国产av无码专区亚洲精品| aⅴ在线免费观看| www.99av.com| 91看片破解版| 国产精品av免费| 蜜桃视频一区二区在线观看| 免费超爽大片黄| 131美女爱做视频| 北条麻妃av高潮尖叫在线观看| 又色又爽又高潮免费视频国产| 国产精品视频黄色| 国产精品久久久久久久av福利| 免费在线观看污污视频| 好吊色视频988gao在线观看| 99在线观看视频免费| 每日在线更新av| 亚洲一区二区蜜桃| 91蝌蚪视频在线| 日韩伦理在线免费观看| 国产免费毛卡片| 中文字幕第17页| 成人在线视频一区二区三区| 3d动漫一区二区三区| 欧美伦理片在线看| 999热精品视频| 日韩av在线播放不卡| 热久久精品国产| 一级日本黄色片| 777精品久无码人妻蜜桃| 午夜宅男在线视频| 肉大捧一出免费观看网站在线播放| 男女私大尺度视频| 亚洲最大综合网| 黄色片免费在线观看视频| 国产精品人人妻人人爽人人牛| 欧美一级特黄aaa| 免费观看美女裸体网站|