<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
            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
                   
          主站蜘蛛池模板: 久久久久香蕉国产线看观看伊| 国产亚洲精品成人av一区| 一区二区三区四区激情视频| 亚洲色大成网站www久久九九| 亚洲欧洲综合| 国产AV福利第一精品| 久久国产精品一国产精品金尊| 国产麻豆精品一区一区三区| 无码 人妻 在线 视频| 豆国产97在线 | 亚洲| 成人一区二区三区激情视频| 女同另类激情在线三区| 国产日韩精品免费二三氏| 无码AV无码免费一区二区| 性一交一乱一乱一视频| 国产黄色一区二区三区四区| 欧美老少配性行为| 性少妇videosexfreexxxx片 | 蜜臀av无码一区二区三区| 91香蕉视频在线| 亚洲黄色一级片在线观看| 久久88香港三级台湾三级播放| 国产短视频精品一区二区| aa级毛片毛片免费观看久| 亚洲AV无码综合一区二区在线| 亚洲色欲色欱WWW在线| 国产色爱av资源综合区| 亚洲www永久成人网站| 精品国产一区二区三区大| 亚洲国产一区二区三区最新| 夜夜爽免费888视频| 亚洲AV永久无码嘿嘿嘿嘿| 亚洲一区二区三区影院| 全部av―极品视觉盛宴| 亚洲欧美中文日韩V日本| 精品无码久久久久成人漫画| 国产成人一区二区三区在线| 国产高清午夜人成在线观看,| 日韩一二三无码专区| 精品国产午夜福利在线观看| 日韩中文字幕免费在线观看|