日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

Global EditionASIA 中文雙語Fran?ais
China
Home / China / Latest

Study highlights risks of COVID-19 aerosol transmission

By Wang Xiaoyu | chinadaily.com.cn | Updated: 2021-08-22 13:17
Share
Share - WeChat
China CDC staff prepares polystyrene fluorescent microsphere liquid in an isolation ward in Liwan Central Hospital in Guangzhou, Guangdong province on June 5, 2020. [Photo provided to chinadaily.com.cn]

A new study released by Chinese researchers on Friday has called attention to the risk of aerosol transmission of the novel coronavirus between buildings used for centralized isolation and close to each other.

It also found the virus' spread through aerosols – droplets carrying the virus that can mix with the air and be inhaled – is likely aided by the operation of air conditioners, as well as opening or closing doors and windows. Thus, monitoring airflow at isolation wards for COVID-19 patients as well as disinfection in such areas should be stepped up.

The study was published online by China CDC Weekly, an academic platform established by the Chinese Center for Disease Control and Prevention. It was jointly conducted by researchers from the China CDC and local disease control workers in Guangdong province.

In May, a COVID-19 patient in Guangzhou, Guangdong province was suspected of catching the virus through aerosols from another patient who stayed in a separate building at the same hospital. Both were incoming passengers arriving from overseas.

Before their diagnoses, the two patients were isolated in two different buildings located about 50 centimeters apart and sharing an exterior ceiling, forming a relatively enclosed space.

Researchers then conducted a field experiment at the hospital. They used fluorescent microspheres to simulate and observe the diffusion of aerosol particles in the air, and then determined their transmission path.

Experiment results showed the operation status of air conditioners, the opening and closing of doors and windows and regular human activity can all affect the spread of aerosols between buildings in close proximity.

"The better the ventilation, the faster the transmission," their report concluded.

Based on the findings, it is suggested adequate space should be maintained between isolation wards and routine outpatient areas at hospitals.

Additionally, in isolation wards air distribution layout should be examined and disinfection measures strengthened to lower the risk of the virus’s transmission via aerosols.

Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 国产精品1区2区3区 一级电影免费 | 久草网站在线 | 久久久成人精品 | 久久久7777888精品 | 欧美一区二区三区久久久 | av中文字幕在线播放 | 一级黄色欧美 | 国产精品国产三级国产aⅴ无密码 | 国产精品免费观看 | 性色屋 | 国产精品人妻一区夜夜爱 | 久久青草精品免费资源站 | 在线观看免费国产视频 | 毛片a在线 | 国产综合在线视频 | 日韩中文视频 | 日本污网站 | 日韩黄网站 | 欧美在线综合 | 国产一区不卡 | 91社区影院| 国产精品91久久久久 | 日韩无毛 | www.99热.com| 亚洲成a人片在线看 | 98精品国产高清在线xxxx | 日韩欧美一区二区三区视频 | 精品久久久久一区二区三区 | 国产99久久久久久免费看 | 斗罗破苍穹在线观看免费完整观看 | 久久精品一区二区三区四区 | 四虎精品 | 国产在线播放免费 | 亚洲久久视频 | 欧美性免费视频 | 国产福利在线观看精品 | 日本在线黄 | 日韩 亚洲 欧美 中文 高清 | 日韩理论在线 | 美女爽到呻吟久久久久 | 国产精品久久久久一区二区 |