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Omicron is not spreading quite as fast as we thought

Remember that estimate last week from the CDC that Omicron now accounted for 73% of all COVID cases? This is now inoperative. Here are this week's estimates:

The CDC now estimates that last week Omicron accounted for 22% of all cases, not 73%. This week it's up to 58%. Maybe.

Obviously the CDC's surveillance methods have pretty high error bars. It's also worth noting that they're based on modeled estimates for the two most current weeks. We'll have to wait until next week to get actual results for the week of December 18.

14 thoughts on “Omicron is not spreading quite as fast as we thought

  1. antiscience

    Heh, interestingly, that's less reassuring than it appears at first glance. B/c this means that there's a whole heckuva lot more Delta infected people out there than we thought. And Delta is at least as severe as omicron [ok, I minimize].

  2. rick_jones

    That is now inoperative.

    Inoperative? I would call that being charitably euphemistic... Particularly given how so many (news) outlets presented it as, well, gospel.

    Also, we now have an answer to the question:

    Something about the math doesn't seem to add up here. What am I missing?

    from: https://jabberwocking.com/why-has-the-delta-variant-of-covid-plummeted-so-fast/ though we cannot put a comment to that effect there since comments closed after one week.

    1. Special Newb

      Un-peer reviewed papers (they will be just not yet) SUGGESTS omicron protects against delta but delta doesn't against omicron. This makes sense since the omicron spike has deltas mutations and a ton more while delta's mutations are only a tiny part of the omicron spike.

  3. Spadesofgrey

    Omicron is a large shift due to it cannibalizing itself to spread more. More dead cases that are irrelevant. Less actual sickness.

    1. Special Newb

      If 2,000 people need hospital beds at once compared to 1,000 when you only have 900 because overall cases explode then you are actually more fucked, you stupid pissant.

  4. golack

    The omicron wave is sitting on top of the Thanksgiving bump, which is still probably delta. Will vary by location.

    Hospitalizations going up in many, but not all, places too. I don't have info on variant percentages, just that majority in hospital are not vaccinated.

  5. Vog46

    Interesting that both Delta and Omicron are acting side by side.

    Omicron washing through the vaxxed and un vaxxed
    Delta killing the unvaxxed including young children

    Now COVID being detected outside the respiratory system in the heart and brain.
    For ANYONE to suggest not getting vaccinated for ANY reason is just plain wrong. Delta imposes a big viral load on most folks. Omicron does it too but in a different way.
    BOTH are dangerous to the un-vaccinated

    1. Spadesofgrey

      Lol nope. Young children???? Stop making shit up. Delta peaked in late summer.

      Omicron is the death spiral of covid 19. Cannibalizing itself to spread.

      1. rational thought

        Have to agree with spades here.

        Coming, vog. Young children! Just stop that nonsense. The covid death rate for young children is just so low. Total flu and covid deaths in that group are less than what a normal flu year would produce in just flu deaths pee pandemic

        1. rational thought

          Oops posted while trying to correct a misspelling.

          Flu deaths pre pandemic for young kids were higher than covid plus flu last year . All the masking and restrictions really helped them re lower deaths by killing off the flu more than reducing covid . Masking is quite marginal in effectiveness for a virus like covid but just really makes it hard for the flu .

          The covid death risk is just so low for young kids that no sort of restrictions affecting their quality of life are justifiable for THEIR benefit. And that likely is the case up to at least the 30s..

          Now that does not mean that it is not justifiable still to protect older folks like me and vog, if the tradeoff was fair and proportionate.

          But this excessive exaggeration of death risk to kids is largely so you do not have to admit that you advocated for children to suffer to benefit yourself .

  6. Justin

    More than 6,000 NYPD cops — about 17 percent of the 36,000-member uniformed force — were out sick as of Tuesday as COVID-19 infections continue to soar across the country, police sources said. Of that total, 3,000 cops had flu-like symptoms and more than 1,300 were diagnosed with COVID, the sources said. The percentage out sick Tuesday is double the total from the same day last week.

    This is the free Christmas vacation disease! Good for them!

  7. damgo2

    If you looked at the actual confidence interval for that estimate from last week, it was something like 25% - 90%. In other words -- mostly meaningless. Not surprising given it was a regression model based on tiny numbers of exponentially-increasing cases from a couple weeks earlier. Of course that's going to be hugely error-prone.

    I'm surprised they even published it like that, honestly; it was such an eye-popping result it was clearly going to get spread widely.

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