1/ Helpful clarification by #CDC w/ important practical implications to avoid wasting energy & money on excessive surface cleaning:
"each contact with a contaminated surface has less than a 1 in 10,000 chance of causing an infection"
HT @JudahWorldChamp
cdc.gov/coronavirus/20…
"each contact with a contaminated surface has less than a 1 in 10,000 chance of causing an infection"
HT @JudahWorldChamp
cdc.gov/coronavirus/20…
2/ Important to note that COVID can potentially spread in individual cases via direct/surface contact, via cannonball-like droplets, or inhalation of aerosols.
The brief clarifies that surfaces are statistically very unlikely to cause many infections; so focus most on the air.
The brief clarifies that surfaces are statistically very unlikely to cause many infections; so focus most on the air.
3/ From CDC brief today:
"However, based on available epidemiological data and studies of environmental transmission factors, surface transmission is not the main route by which SARS-CoV-2 spreads, and the risk is considered to be low."
"However, based on available epidemiological data and studies of environmental transmission factors, surface transmission is not the main route by which SARS-CoV-2 spreads, and the risk is considered to be low."
4/ As imp. contrast, CDC brief also specifically points out that increasing #ventilation actually provides a practically important reduction of "airborne transmission cases." (via @JudahWorldChamp)
[but their explanation of droplets still confusing]
[but their explanation of droplets still confusing]
5/ 'Science brief' today on fomite/surface spread 👆 is a good example that #CDC can eventually come around to consensus from airborne experts, just w/ some extra months.
Excellent article by @dyanilewis on need to focus on cleaning air more than surfaces
nature.com/articles/d4158…
Excellent article by @dyanilewis on need to focus on cleaning air more than surfaces
nature.com/articles/d4158…
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