Ministry of Contagion
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Ministry of Contagion kept the space safe during COVID lockdown and facilitated small teams building the new space till it reopened for vaccinated folks. COVID variants continue to appear and pose new risks so we must remain vigilant. We will continue to observe mask and distancing practices and revisit our safety practices and improve our methods of limiting risk of infection. |
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Proceedings of the Temporary Provisional Ministry of Contagion[edit](work in progress ...) Premise[edit]
Observations[edit]Hazards[edit]
Recommendations[edit]
Regarding transmission routes and space closure[edit]Available scientific studies regarding the stability of SARS-CoV-2 (aka. HCoV-19 or coronavirus) particles in aerosols (from breathing, coughing, speaking, etc.) and on environmental surfaces (from contaminated hands or aerosols settling) provide evidence that the viral particles remain viable for widely differing periods depending on the surface, ranging from several hours (for aerosols) to multiple days (up to 7 days on smooth surfaces). According to one study, "SARS-CoV-2 was stable on plastic, stainless steel, glass, ceramics, wood, latex gloves, and surgical mask, and remained viable for seven days on these seven surfaces. As is shown in Figure 1A, the virus titer declined slowly on these seven surfaces. For example, its TCID50/ml [50% infectious tissue culture dose per millimeter] decreased from 105.83 at time zero to 10^2.06 at day 7 on plastic, which was about a 3.8 log10 reduction from the original inoculum." (1) Another study on the stability of SARS-CoV-2 in aerosols and on various surfaces found that "HCoV-19 was most stable on plastic and stainless steel and viable virus could be detected up to 72 hours post application (Figure 1B), though by then the virus titer was greatly reduced (polypropylene from 10^3.7 to 10^0.6 TCID50/mL after 72 hours, stainless steel from 10^3.7 to 10^0.6 104 TCID50/mL after 48 hours, mean across three replicates)." The same study also found that "HCoV-19 remained viable in aerosols throughout the duration of our experiment (180 minutes) with a reduction in infectious titer 3 hours post-aerosolization from 10^3.5 to 10^2.7 CID50/L (mean across three replicates). This reduction in viable virus titer is relatively similar to the reduction observed in aerosols containing SARS-CoV-1, from 10^4.3 to 10^3.5 TCID50/mL (mean across three replicates) (Figure 1A)." (2)
"The virus is thought to spread mainly from person-to-person.
And further that: "The virus may be spread in other ways. It may be possible that a person can get COVID-19 by touching a surface or object that has the virus on it and then touching their own mouth, nose, or possibly their eyes. This is not thought to be the main way the virus spreads, but we are still learning more about how this virus spreads." (3)
(2) Aerosol and surface stability of HCoV-19 (SARS-CoV-2) compared to SARS-CoV-1. 2020. Neeltje van Doremalen, Trenton Bushmaker, Dylan Morris, Myndi Holbrook, Amandine Gamble, Brandi Williamson, Azaibi Tamin, Jennifer Harcourt, Natalie Thornburg, Susan Gerber, Jamie Lloyd-Smith, Emmie de Wit, Vincent Munster. doi: https://doi.org/10.1101/2020.03.09.20033217 [pre-print article, now published in The New England Journal of Medicine doi: 10.1056/NEJMc2004973] (3) www.https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/how-covid-spreads.html [accessed 2020-06-26 at 10:16 PDT] |