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p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div style="font-family:Arial;">"I wonder how many of us are back in lockdown and aren’t telling each other?"<br></div><div style="font-family:Arial;"><br></div><div style="font-family:Arial;">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.<br></div><div style="font-family:Arial;"><br></div><div style="font-family:Arial;">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.<br></div><div style="font-family:Arial;"><br></div><div style="font-family:Arial;">Headline today said Omicron has run out of hosts. Multiple headlines/stories setting expectation for massive plunge in cases over next week, 10 days.<br></div><div style="font-family:Arial;"><br></div><div style="font-family:Arial;">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.<br></div><div style="font-family:Arial;"><br></div><div style="font-family:Arial;">davew<br></div><div style="font-family:Arial;"><br></div><div style="font-family:Arial;"><br></div><div>On Wed, Jan 12, 2022, at 9:20 AM, <a href="mailto:thompnickson2@gmail.com">thompnickson2@gmail.com</a> wrote:<br></div><blockquote type="cite" id="qt" style="overflow-wrap:break-word;"><div class="qt-WordSection1"><p class="qt-MsoNormal">I wonder how many of us are back in lockdown and aren’t telling each other? <br></p><p class="qt-MsoNormal"> <br></p><p class="qt-MsoNormal">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.” <br></p><p class="qt-MsoNormal"> <br></p><p class="qt-MsoNormal">If Marcus is worrying about transmission in parks, maybe that time has come.<br></p><p class="qt-MsoNormal"> <br></p><div><p class="qt-MsoNormal">Nick Thompson<br></p><p class="qt-MsoNormal"><a href="mailto:ThompNickSon2@gmail.com"><span style="color:rgb(5, 99, 193);">ThompNickSon2@gmail.com</span></a><br></p><p class="qt-MsoNormal"><a href="https://wordpress.clarku.edu/nthompson/"><span style="color:rgb(5, 99, 193);">https://wordpress.clarku.edu/nthompson/</span></a><br></p></div><p class="qt-MsoNormal"> <br></p><div><div style="border-right-color:currentcolor;border-right-style:none;border-right-width:medium;border-bottom-color:currentcolor;border-bottom-style:none;border-bottom-width:medium;border-left-color:currentcolor;border-left-style:none;border-left-width:medium;border-image-outset:0;border-image-repeat:stretch;border-image-slice:100%;border-image-source:none;border-image-width:1;border-top-color:rgb(225, 225, 225);border-top-style:solid;border-top-width:1pt;padding-top:3pt;padding-right:0in;padding-bottom:0in;padding-left:0in;"><p class="qt-MsoNormal"></p><div><b>From:</b> Friam <friam-bounces@redfish.com> <b>On Behalf Of </b>Marcus Daniels<br></div><div><b>Sent:</b> Wednesday, January 12, 2022 11:03 AM<br></div><div><b>To:</b> friam@redfish.com<br></div><div><b>Subject:</b> Re: [FRIAM] preprint aerosol covid<br></div><p></p></div></div><p class="qt-MsoNormal"> <br></p><div><p class="qt-MsoNormal"><span style="color:black;"><span class="size" style="font-size:12pt;">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?</span></span><br></p></div><div><p class="qt-MsoNormal"><span style="color:black;"><span class="size" style="font-size:12pt;"> </span></span><br></p></div><div><p class="qt-MsoNormal"><span style="color:black;"><span class="size" style="font-size:12pt;">Marcus</span></span><br></p></div><div class="qt-MsoNormal" style="text-align:center;" align="center"><hr width="98%" size="2" align="center"><br></div><div id="qt-divRplyFwdMsg"><p class="qt-MsoNormal"><b><span style="color:black;">From:</span></b><span style="color:black;"> Friam <<a href="mailto:friam-bounces@redfish.com">friam-bounces@redfish.com</a>> on behalf of glen <<a href="mailto:gepropella@gmail.com">gepropella@gmail.com</a>><br><b>Sent:</b> Wednesday, January 12, 2022 9:59 AM<br><b>To:</b> <a href="mailto:friam@redfish.com">friam@redfish.com</a> <<a href="mailto:friam@redfish.com">friam@redfish.com</a>><br><b>Subject:</b> Re: [FRIAM] preprint aerosol covid</span></p><div><p class="qt-MsoNormal"> <br></p></div></div><div><div><p class="qt-MsoNormal"></p><div>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.<br></div><div><br></div><div>On 1/12/22 08:56, Marcus Daniels wrote:<br></div><div>> 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.<br></div><div>> The noise is like being in an airplane all the time. I rather like fan noise though. I could sleep in a machine room.<br></div><div>> <br></div><div>> Marcus<br></div><div>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<br></div><div>> *From:* Friam <<a href="mailto:friam-bounces@redfish.com">friam-bounces@redfish.com</a>> on behalf of glen <<a href="mailto:gepropella@gmail.com">gepropella@gmail.com</a>><br></div><div>> *Sent:* Wednesday, January 12, 2022 9:25 AM<br></div><div>> *To:* <a href="mailto:friam@redfish.com">friam@redfish.com</a> <<a href="mailto:friam@redfish.com">friam@redfish.com</a>><br></div><div>> *Subject:* [FRIAM] preprint aerosol covid<br></div><div>> The Dynamics of SARS-CoV-2 Infectivity with Changes in Aerosol Microenvironment<br></div><div>> <a href="https://www.medrxiv.org/content/10.1101/2022.01.08.22268944v1">https://www.medrxiv.org/content/10.1101/2022.01.08.22268944v1</a> <<a href="https://www.medrxiv.org/content/10.1101/2022.01.08.22268944v1">https://www.medrxiv.org/content/10.1101/2022.01.08.22268944v1</a>><br></div><div>>> 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 (<span style=""><span class="font" style="font-family:"Cambria Math", serif;">∼</span></span>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 <span style=""><span class="font" style="font-family:"Cambria Math", serif;">∼</span></span>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 <span style=""><span class="font" style="font-family:"Cambria Math", serif;">∼</span></span>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 <br></div><div>> 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.<br></div><div><br></div><div>-- <br></div><div>glen<br></div><div>Theorem 3. 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