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: 国产小视频在线播放 | 91视频导航| 亚洲视频一区在线 | 日韩高清一区二区 | 欧美一区视频 | 在线久草 | 免费黄色大全 | 欧美日韩一区二区在线 | 国产高清一区 | 精品一本久久中文字幕 | 午夜精品久久久久久久99蜜桃i | 青娱乐在线免费 | 欧美综合视频在线 | 欧美巨波霸乳影院67194 | 精品欧美一区二区精品久久久 | 天天操天天擦 | 嫩草影院永久入口在线观看 | 亚洲一区二区三区日本久久九 | 668溜溜吧| 欧美色性 | 成人性生活视频在线观看 | 自拍偷拍视频网站 | 国产亚洲99影院 | 天天干天天拍天天操 | 成人性生免费视频 | 欧美日韩一区二区三区在线观看 | 国产福利视频在线 | 亚洲v日韩v综合v精品v | 亚洲 欧美 日韩中文字幕一区二区 | 超碰免费在线观看 | 污污视频免费网站 | 国产精品美女久久久久久 | 国产亚洲第一伦理第一区 | 黄色精品| 国产精品国偷自产在线 | 欧美人xx| 四虎影视国产884a精品亚洲 | 成年网址网站在线观看 | 中国xxnxx免费 | 日本在线播放不卡一区二区三区 | 68久久久久欧美精品观看 |