#Infectiousness

What role does previous exposure to seasonal coronaviruses play in disease severity for COVID-19?New paper (great thread from @VirusesImmunity below) provides some evidence, but I don't think it can explain
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It's time to clarify some things about children, schools and #COVID19 Summary: Young children seem significantly less susceptible, probably less likely to transmit. Less clear for teens. Schools mainly follow
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1/ Thanks, Linsey. I have some concerns about public anxiety regarding HVAC systems & recirculation. First, it is just not feasible for many across North America to have supply air
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What is #herdimmunity threshold for #COVID19?A topic of much discussion due to large uncertainty & huge consequences for long term impact. New paper illustrates 1 key aspect that can reduce
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BEAST MODE—the new B117 is a beast of a #SARSCoV2 variant. The variant adds ~ 0.4-0.7 to the R (Reproductive number). What could keep in check via containment, R
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I think a lot of the discourse around new rapid tests has become slightly toxic.They have clear advantages & limitations, and I think I have covered this clearly enough in
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A lot has been made of the costs of large-scale testing, and the tens of billions required is often actually stated as the main reason to not do it.However, this
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1/ Covid (@UCSF) Chronicles, Day 135UCSF Medical Grand rounds today, available here https://tinyurl.com/y2tpw3h4 . If there could be such a thing as a “classic” set of topics in a pandemic that’s
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How well will these 15-minute rapid tests Boris mentioned work? (quick answer – we don’t know)The Innova test was mentioned this week in Telegraph.https://www.telegraph.co.uk/news/2020/10/19/government-secures-20-million-covid-quick-tes
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For weeks, the public messages about vaccines have been more negative than the facts warrant.Now we are seeing the cost: A large percentage of Americans wouldn't take a vaccine if
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Contact tracing is important to dealing with covid, but isn’t a silver bullet. If you don’t believe me, check out what’s happening in South Korea. Their contact tracing really is
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Misleading paper is being promoted as showing that transmission in schools is unlikely and children are less susceptible to #COVID19. Data presented show opposite - equal attack rate in all
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The new strain of #COVID is more transmissible. Will it be deadlier?Many ppl think not: "If a virus kills more quickly, it has fewer opportunities to spread. It's the transmission-virulence
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A thread about COVID in schools. This recent nature piece summarizes the situation from a research perspective well: we still do not know enough about the biology of the virus
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.@NYTimes has done great data journalism on #SARS_CoV_2, filling gaps left by an incompetent US federal response but their recent coverage re: schools is tipping towards sensationalism & divergence from
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Since the emergence of SARS-CoV-2, there has been an unparalleled scientific effort to characterise the virus and the clinical course of #COVID19.What have we learned so far about #SARSCoV2, how
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