"I wonder how many of us are back in lockdown and aren’t telling each other?"
CDC head on one of the Sunday news shows; responding to some comments made by earlier by Sotomayer about Covid (convoluted intro because I forgot name and which show), stated that 78% of those dying or having severe problems with COVID had "four or more comorbidity factors." Long ago, Italy reported that 90% of those who died from Covid had comorbidity factors. It those kind of statistics that primarily affect any decision I might make about lock down. Masks and vaccination are being done, not for me, but because the latter is still the mandate here and the former because I desire to travel to Europe again. Headline today said Omicron has run out of hosts. Multiple headlines/stories setting expectation for massive plunge in cases over next week, 10 days. Where can I find accurate estimate of number of people in US that have been vaccinated or recovered from the disease and have antibodies. A year ago, it was said that when this number hit between 70-80 percent we should have de facto herd immunity, but no one seems to talk about this anymore. davew On Wed, Jan 12, 2022, at 9:20 AM, thompnicks...@gmail.com wrote: > I wonder how many of us are back in lockdown and aren’t telling each other? > > Or, how many of us think we should be in lock down, but aren’t. This little > voice keeps saying to me (you know, my “inner” voice) “Nick. This omicron > thing is going to be terrifying for the next six weeks and then be gone. The > hospitals are going to be jammed. Not a time to risk any kind of medical > emergency, let alone COVID. Stay home. Avoid icy pavements. No sneaking > off for coffee.” > > If Marcus is worrying about transmission in parks, maybe that time has come. > > Nick Thompson > thompnicks...@gmail.com > https://wordpress.clarku.edu/nthompson/ > > *From:* Friam <friam-boun...@redfish.com> *On Behalf Of *Marcus Daniels > *Sent:* Wednesday, January 12, 2022 11:03 AM > *To:* friam@redfish.com > *Subject:* Re: [FRIAM] preprint aerosol covid > > > Yesterday I was feeling nervous about being in the park. It was super still > but also high humidity. Are people wearing masks outside? This makes me > think I should again? > > Marcus > > *From:* Friam <friam-boun...@redfish.com> on behalf of glen > <geprope...@gmail.com> > *Sent:* Wednesday, January 12, 2022 9:59 AM > *To:* friam@redfish.com <friam@redfish.com> > *Subject:* Re: [FRIAM] preprint aerosol covid > > Yeah, I enjoyed the closed rooms at lockheed. But only the 60Hz ones. The > 400Hz rooms were horrible. If the results check out, it spells trouble for > me, though, hanging out in breweries ... which usually have higher than > normal relative humidity. Stupid virus. > > On 1/12/22 08:56, Marcus Daniels wrote: > > We have enough air purifiers to filter the air in the house six times an > > hour. It reminds me of the days when I had bitcoin miners running. > > The noise is like being in an airplane all the time. I rather like fan > > noise though. I could sleep in a machine room. > > > > Marcus > > ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ > > *From:* Friam <friam-boun...@redfish.com> on behalf of glen > > <geprope...@gmail.com> > > *Sent:* Wednesday, January 12, 2022 9:25 AM > > *To:* friam@redfish.com <friam@redfish.com> > > *Subject:* [FRIAM] preprint aerosol covid > > The Dynamics of SARS-CoV-2 Infectivity with Changes in Aerosol > > Microenvironment > > https://www.medrxiv.org/content/10.1101/2022.01.08.22268944v1 > > <https://www.medrxiv.org/content/10.1101/2022.01.08.22268944v1> > >> Understanding the factors that influence the airborne survival of viruses > >> such as SARS-CoV-2 in aerosols is important for identifying routes of > >> transmission and the value of various mitigation strategies for preventing > >> transmission. We present measurements of the stability of SARS-CoV-2 in > >> aerosol droplets (∼5-10µm equilibrated radius) over timescales spanning > >> from 5 seconds to 20 minutes using a novel instrument to probe survival in > >> a small population of droplets (typically 5-10) containing ∼1 > >> virus/droplet. Measurements of airborne infectivity change are coupled > >> with a detailed physicochemical analysis of the airborne droplets > >> containing the virus. A decrease in infectivity to ∼10 % of the starting > >> value was observable for SARS-CoV-2 over 20 minutes, with a large > >> proportion of the loss occurring within the first 5 minutes after > >> aerosolisation. The initial rate of infectivity loss was found to > >> correlate with physical transformation of the equilibrating droplet; salts > >> within the droplets crystallise at RHs below 50% leading to a near instant > >> loss of infectivity in 50–60% of the virus. However, at 90% RH the droplet > >> remains homogenous and aqueous, and the viral stability is sustained for > >> the first 2 minutes, beyond which it > > decays to only 10% remaining infectious after 10 minutes. The loss of > > infectivity at high RH is consistent with an elevation in the pH of the > > droplets, caused by volatilisation of CO2 from bicarbonate buffer within > > the droplet. Three different variants of SARS-CoV-2 were compared and found > > to have a similar degree of airborne stability at both high and low RH. > > -- > glen > Theorem 3. 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