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LongDesertTrain's profile
Ryan Hisner
Ryan Hisner
Ryan Hisner
@LongDesertTrain

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Ryan Hisner

@LongDesertTrain

Science & Physics Teacher; "Be ruthless with systems and be kind to people." Michael Brooks, 1983-2020

Joined May 2018

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    Ryan Hisner‏ @LongDesertTrain Jan 9

    1/6 Important new study from Japan finds that with Omicron, infectious viral loads peak 3-6 days after symptom onset/diagnosis. So many people are ending isolation & returning to work & school at peak infectiousness. Thanks, @CDCgov. h/t @gianlucac1 https://www.niid.go.jp/niid/en/2019-ncov-e/10884-covid19-66-en.html …pic.twitter.com/aDqZgoyxRb

    6:06 AM - 9 Jan 2022
    • 3,572 Retweets
    • 6,729 Likes
    • evan 劉心宜 🥺 Louise Laine Alberto Antonio Jr. gumbastn makata ng katagalugan Rachel⁷ 🐙💜 Eli 🐰 ✞rixie | LENI 2022 🎀
    128 replies 3,572 retweets 6,729 likes
      1. New conversation
      2. Ryan Hisner‏ @LongDesertTrain Jan 9

        2/6 They looked at 21 cases: 19 vaxxed, 2 unvaxxed, 17 symptomatic, 4 asymptomatic. For the symptomatic, viral loads (by PCR Ct value) were much higher on days 3-6 after symptom onset than days -1 to 2. Furthermore, many samples still had high viral loads on days 7-9.pic.twitter.com/x1rXPq6Gsf

        13 replies 222 retweets 581 likes
        Show this thread
      3. Ryan Hisner‏ @LongDesertTrain Jan 9

        3/6 This is very different than what we'd seen with previous variants. Studies by @LucaFerrettiEvo, @DiseaseEcology, & others showed that peak infectiousness previously occurred the day before symptom onset & fell fairly rapidly thereafter. https://www.medrxiv.org/content/10.1101/2020.09.04.20188516v2 …pic.twitter.com/r4c04W3C3Q

        7 replies 116 retweets 438 likes
        Show this thread
      4. Ryan Hisner‏ @LongDesertTrain Jan 9

        4/6 Before people start shouting about Ct values measuring dead RNA fragments, note that the researchers cultured virus from these samples, and the results mirrored those for Ct value: peak levels of live virus on days 3-6 & significant amounts of live virus on days 7-9.pic.twitter.com/XLuo1M2xdd

        8 replies 101 retweets 479 likes
        Show this thread
      5. Ryan Hisner‏ @LongDesertTrain Jan 9

        5/6 Will the CDC "follow the science" & revise their 5-day, no-exit-test isolation period in light of these results? Or was that guideline based entirely on political & economic considerations (i.e. the desires of the wealthy & well-connected political donors)? Take a guess.

        16 replies 183 retweets 870 likes
        Show this thread
      6. Ryan Hisner‏ @LongDesertTrain Jan 9

        6/6 I know @michaelmina_lab discussed the tendency for infectiousness to peak later (relative to symptom onset) in a population with widespread immunity compared to a naive pop, but I can't find the tweet. This + short incubation period may largely explain this study's findings.

        19 replies 65 retweets 414 likes
        Show this thread
      7. Ryan Hisner‏ @LongDesertTrain 15h15 hours ago

        Ryan Hisner Retweeted Lazarus Long

        7/ Adding this from @LazarusLong13: Taiwan rejects shortening of the 10-day isolation period based on viral load measurements (based on Ct value). They didn't culture to detect live virus, but their Ct results match very well w/the Japan study.https://twitter.com/LazarusLong13/status/1477194315512246272 …

        Ryan Hisner added,

        Lazarus Long @LazarusLong13
        23 omicron cases tracked. No Omicron case reached a level low enough to be released prior to 8 days. After, 26% remained infectious. Keep in mind that the US policy was decided in part by a 36 person NBA study. @CDCDirector - follow the science. Or the math in next tweet. https://twitter.com/JCityUX/status/1476868848393535498 … pic.twitter.com/FAntAKx1k1
        Show this thread
        1 reply 43 retweets 114 likes
        Show this thread
      8. Ryan Hisner‏ @LongDesertTrain 15h15 hours ago

        Ryan Hisner Retweeted Barry Hunt #COVIDisAirborne  🌬  😷 🪟

        8/ Who has more credibility and a better track record when it comes to Covid, the U.S. CDC or Taiwan's CECC? 🤔🤔https://twitter.com/BarryHunt008/status/1477105766574272520 …

        Ryan Hisner added,

        Barry Hunt #COVIDisAirborne  🌬  😷 🪟 @BarryHunt008
        Replying to @JCityUX @j_g_allen
        Really? What makes Taiwan think they know how to handle CoVID better than the CDC? Oh. Right. Never mind. pic.twitter.com/D2F32dmsC8
        4 replies 26 retweets 131 likes
        Show this thread
      9. End of conversation
      1. New conversation
      2. Kreus‏ @Kaarina_Kreus Jan 9
        Replying to @LongDesertTrain @CDCgov

        pic.twitter.com/4gUUDnJ8i1

        3 replies 53 retweets 209 likes
      3. Alberto Román  👟 👟 🥊‏ @alberto_roman83 Jan 9
        Replying to @Kaarina_Kreus @LongDesertTrain @CDCgov

        pic.twitter.com/t98ka4sJxc

        0 replies 2 retweets 39 likes
      4. End of conversation
      1. hoeman‏ @_hoeman Jan 9
        Replying to @LongDesertTrain @CDCgov @gianlucac1

        @CT_Bergstrom

        0 replies 0 retweets 6 likes
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