Y*****d
发帖数: 1 | 1 现在还赖土共掩盖疫情的该歇歇了，美帝现在还改来改去，没个准信，真是作孽。
https://www.cnbc.com/2020/10/05/cdc-revises-coronavirus-guidance-to-
acknowledge-that-it-spreads-through-airborne-transmission.html
The Centers for Disease Control and Prevention revised its coronavirus
guidance Monday, acknowledging that it can sometimes spread through airborne
particles that can “linger in the air for minutes to hours” and among
people who are more than six feet apart.
The CDC cited published reports that demonstrated “limited, uncommon
circumstances where people with COVID-19 infected others who were more than
6 feet away or shortly after the COVID-19-positive person left an area.”
“In these instances, transmission occurred in poorly ventilated and
enclosed spaces that often involved activities that caused heavier breathing
, like singing or exercise,” the CDC said in a statement. “Such
environments and activities may contribute to the buildup of virus-carrying
particles.”
The agency added that it is “much more common” for the virus to spread
through larger respiratory droplets that are produced when somebody coughs,
sneezes, sings, talks, or breathes. People are infected through such
droplets mostly when they are in close contact with an infected person, the
CDC said.
“CDC’s recommendations remain the same based on existing science and after
a thorough technical review of the guidance,” the agency said. “People
can protect themselves from the virus that causes COVID-19 by staying at
least 6 feet away from others, wearing a mask that covers their nose and
mouth, washing their hands frequently, cleaning touched surfaces often and
staying home when sick.”
The updated guidance comes after the agency mistakenly posted a revision
last month that said the virus could spread through aerosols, small droplets
that can linger in the air. The guidance was quickly removed from the CDC’
s website because it was just “a draft version of proposed changes,” the
agency said.
To what degree the coronavirus can spread through airborne particles has
been a contentious debate among scientists for months. Some epidemiologists
have charged that the World Health Organization as well as federal
regulatory agencies in many countries have been slow to accept that the
virus can spread by air. It’s a debate that could have implications for the
importance of air filtration in reopening businesses and schools. | c********6
发帖数: 370 | | k**o
发帖数: 15334 | | b*********5
发帖数: 1 | 4 just “a draft version of proposed changes,”？？
太不要脸了，哈哈 | c****g
发帖数: 37081 | | k*******p
发帖数: 8821 | 6 整个美国不就是笑话吗？
感染的人最多，死的人最多。医疗缺乏，物资缺乏，大批病人无法得到必要的治疗。妥
妥的世界第一伪强国。
【在 c********6 的大作中提到】
: CDC在这次疫情中就是个JOKE
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