Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror
×
News

South Africa's Huge Omicron Wave Appears To Be Subsiding Just as Quickly As it Grew (washingtonpost.com) 99

South Africa's huge wave of omicron cases appears to be subsiding just as quickly as it grew in the weeks after the country first announced to the world that a new coronavirus variant had been identified. From a report: South Africa's top infectious-disease scientist, who has been leading the country's pandemic response, said Wednesday that the country had rapidly passed the peak of new omicron cases and, judging by preliminary evidence, he expected "every other country, or almost every other, to follow the same trajectory."

"If previous variants caused waves shaped like Kilimanjaro, omicron's is more like we were scaling the North Face of Everest," Salim Abdool Karim said in an interview, referring to the near-vertical increase in infections that South Africa recorded in the first weeks of December. "Now we're going down, right back down, the South Face -- and that is the way we think it may work with a variant like omicron, and perhaps even more broadly what we'll see with subsequent variants at this stage of the pandemic," he said. Just a week ago, South Africa was seeing skyrocketing positivity rates and massive lines for testing. But during the first days of this week, there has been a turnaround in rates and stress on testing facilities. In addressing the surge of infections, South Africa had decided not to impose a lockdown or other major restrictions, although many countries, including the United States, imposed restrictions on travelers originating in South Africa and neighboring countries.

This discussion has been archived. No new comments can be posted.

South Africa's Huge Omicron Wave Appears To Be Subsiding Just as Quickly As it Grew

Comments Filter:
  • by iamnotx0r ( 7683968 ) on Wednesday December 22, 2021 @03:45PM (#62106969)
    Quick, find the next variant.
    • These people are seriously morons. They don't do any research and it's not even science based anymore. At this point they are just trying to monetize Coronavirus by getting clicks. Then politicians and health authorities are so weak they implement policies based on political science now. Where I live they implemented a bunch of lock down rules where gyms, bars are closed and then other gathering limits. Completely killing their credibility. We already know people who are vaccinated won't get so sick
      • Re: (Score:3, Insightful)

        by fahrbot-bot ( 874524 )

        We already know people who are vaccinated won't get so sick you end up in the hospital.

        But they can still spread the virus to others, so limiting possible exposure opportunities does help.

        • by klipclop ( 6724090 ) on Wednesday December 22, 2021 @04:45PM (#62107213)
          Yes, well I guess that's the rub. Where I live it's the worst of both worlds. Arbitrary restrictions on freedom of movement while places like malls, schools and expectations to go on crammed public transit to work are expected. So the logic makes no sense. It does impress me that some people are incapable of changing their mind as new information comes available.
          • The parent said > limiting possible exposure opportunities does help

            You said > ... so the logic makes no sense

            How do any of the points you brought up contradict what the parent said ?

            • by klipclop ( 6724090 ) on Wednesday December 22, 2021 @05:51PM (#62107395)
              Oh, I mean secondary and post secondary schools. If you can't go to a new year's party, why are schools still planning in person 100% normal operation on the 4th?
              • > If you can't go to a new year's party, why are schools still planning in person 100% normal operation on the 4th?

                Supposing a main point is to reduce cases by X amount, and maybe especially hospitalizations, then it can make sense to reduce some activities more than others.

                Here, for now, they kept schools 100% but reimposed masks and cut gatherings from 20 people to 10 (among other things).

              • by edwdig ( 47888 )

                Oh, I mean secondary and post secondary schools. If you can't go to a new year's party, why are schools still planning in person 100% normal operation on the 4th?

                School is going to be the exposures to more or less the same group of people every day.

                Holiday parties are often going to have exposures to a lot of people you aren't normally exposed to, then you go back to normal life and spread whatever you caught to your normal group of people.

                Both scenarios have risk, but the risk in the "everyone goes to big parties" scenario is going to be multiple orders of magnitude higher.

              • > If you can't go to a new year's party, why are schools still planning in person 100% normal operation on the 4th?

                Missing a party is very inconsequential compared to missing school ?

            • I guess my point is that at this point in the game everyone is vaccinated, we have the QR codes and everyone is pretty mindful. (i.e stay home if sick). So if there is a need for more arbitrary lock downs that aren't following the science, governments and health authorities are just burning credibility.
              • >I guess my point is that at this point in the game everyone is vaccinated, we have the QR codes and everyone is pretty mindful. (i.e stay home if sick).

                Seems like a new point but ok. Unless people have a 3rd 'booster' the protection of being double vaccinated wanes a lot after 6 months and 2 shots offer even less protection for omicron. So things have changed a lot. Also a lot of people don't stay home. Where do you live ?

                >So if there is a need for more arbitrary lock downs that aren't following the

              • by dasunt ( 249686 )

                I guess my point is that at this point in the game everyone is vaccinated, we have the QR codes and everyone is pretty mindful. (i.e stay home if sick). So if there is a need for more arbitrary lock downs that aren't following the science, governments and health authorities are just burning credibility.

                Meanwhile, in the US, about two-thirds of the population has completed it's initial vaccination (either one dose J&J or two-dose MRNA vaccines). Of that, about 30% also have a booster - so about 20% of

        • by Chas ( 5144 )

          Simply acquiring COVID isn't a problem. Let alone the public health disaster that the people in charge claim it is.

          Primarily we should be looking at "deaths from COVID".

          And we should keep a weather eye on "Deaths with COVID" in case there's an actual pattern that emerges.

          And being vaccinated doesn't mean they won't get seriously ill.
          It simply lowers your chances.

          And since your chances are a fraction of a percent already...

          • by fahrbot-bot ( 874524 ) on Wednesday December 22, 2021 @09:25PM (#62107999)

            Primarily we should be looking at "deaths from COVID". ... And being vaccinated doesn't mean they won't get seriously ill. It simply lowers your chances.

            Keep in mind that getting seriously ill from COVID can have long-term, life-changing consequences and shouldn't be dismissed, or downplayed/ignored, simply because someone doesn't die. In addition, the medical expenses from treating COVID may be high -- perhaps even considering insurance, if one has any, Being vaccinated seems to low one's chances of getting seriously ill (and/or dying), and having to be treated for that, a LOT.

            • by Chas ( 5144 )

              Being vaccinated lowers one's chances on a sliding scale.
              Talking about raising one's chances by 90%?
              Remember, the baseline for most people below 60 is 99.6% or better.
              On the ABSOLUTE scale, this means your chances have been raised to roughly 99.9%.
              Better? Yes. But infinitesimally so.
              And this is before taking into account some of the possible complications (clotting, cardiac issues) that these vaccines have.

              And despite decades of public education malfeasance, people can (generally) still do basic math and

              • by Anonymous Coward

                And this is before taking into account some of the possible complications (clotting, cardiac issues) that these vaccines have.

                And despite decades of public education malfeasance, people can (generally) still do basic math and statistics and (with a physician's advice) make their own decisions about their own health.

                And while it's a valid concern, simply saying "Long COVID" and throwing in scary scenarios doesn't justify coercion, violation of rights or turning people into second class citizens.

                So the possible negative short/long term effects of a vaccination are why we shouldn't be vaccinated, but the possible negative short/long term effects of getting COVID don't count for why we should?

                • by Chas ( 5144 )

                  When will people read what I said?

                  "If you want to get vaxxed, GO AHEAD. Talk to your physician and get vaxxed."

                  If someone looks at the the side effects of the vaccine and decide that cardiac damage and/or strokes are something they'd like to avoid...

                  That's their decision.

    • Quick, create the next variant!

    • Quick, find the next variant.

      It will come along. I estimate a couple more similar variants, as covid does what influenzas do, as it eventually winds down next year and becomes similar to the rest of the influenzas that humanity knows and loves.

      And *all* the "media" will obsess over whatever new shiny that happens to come along, as always.

  • Unless 95% of the population already got infected by omicron.
    Previous infection by other variants offer very little protection, therefore cases should go up according to the model.

    • Or not
      As the real data shows

      • which is why this thread is called "hard to explain". I can see cases are going down in South Africa. I haven't found any reason why however. Perhaps you could enlighten us?

        • Re: hard to explain (Score:4, Interesting)

          by olsmeister ( 1488789 ) on Wednesday December 22, 2021 @03:54PM (#62107027)
          Previous infect (or vaccination) may not confer a lot of protection against infection, but it may against serious disease. If Omicron has already torn through most of the population without sending a ton of people to hospital, there may already be enough Omicron immunity present to end the wave.
          • the hospitalization wave, maybe. The case wave, not at all. And we are talking about the case wave here.

            • Easy to explain (Score:3, Insightful)

              by SuperKendall ( 25149 )

              the hospitalization wave, maybe. The case wave, not at all.

              With many people having almost no serious symptoms from Omicron, it's easy to imagine there could have been very wide numbers of cases that didn't show up on official case tallies earlier, the ones you see now is Omicron finally going through the richest segments of the populations that have the time and inclination to actually get tested. So the last gasp of the virus.

              This is exactly what one would expect from a variant that causes almost no hosp

          • This is guesswork, but one idea floated to explain why infections come in waves instead of the S-shaped curve of a self-limited exponential is that "the population" is a conceptual error.

            What if graph theory showed that a society was a bunch of cliques with limited interaction? Then a virus could tear through one set of people who breathe around each other, leave most of its victims resistant, and crowd itself out. Case loads would drop while everyone was wondering why. Then there'd be incidental contact wi

    • by sinij ( 911942 )
      Why do you discard "unless" as a viable explanation? SA reported crazy-high R levels, it is quite likely that exactly what happened.
      • Well it should be pretty easy to confirm. Just take 1000 random people and check. Would be worth it for the rest of the world to know if that's how the Omicron wave ended in South Africa.

      • also, if it's what happened, then they missed over 99% of the cases since they only reported a daily 7-day average peak of about 16000. That's nothing.

    • Do we have any indication that someone who has already had c19 has been reinfected with Omicron? I was under the impression that re-infection was so rare as to be thought virtually impossible.

      Regardless, this mutation may target individuals with very specific characteristics ( low levels of D? C? ), which would explain both the meteoric rise and fall of case #s.

      • I've read many sources that have said that Omicron is escaping immunity and infecting both fully vaxed and previously infected people.

      • Do we have any indication that someone who has already had c19 has been reinfected with Omicron?

        Yes [newsweek.com]

        Not just reinfected, but died.

      • Do we have any indication that someone who has already had c19 has been reinfected with Omicron? I was under the impression that re-infection was so rare as to be thought virtually impossible.

        Yes, yes we do. Also reinfection, even for strains other than Omicron, is not "virtually impossible".

        Regardless, this mutation may target individuals with very specific characteristics ( low levels of D? C? ), which would explain both the meteoric rise and fall of case #s.

        Your conclusion is not supported at all by you

      • Yes, we do, and we have some numbers about the rate. It's very high.

        https://medicalxpress.com/news... [medicalxpress.com]

      • Do we have any indication that someone who has already had c19 has been reinfected with Omicron? I was under the impression that re-infection was so rare as to be thought virtually impossible.

        Neither previous infection nor vaccination that was not recent appear to offer much immunity to Omicron. If it turns out to be the case that Omicron causes much less severe disease, then the real question is the reverse - does infection with Omicron confer good immunity to the other strains of COVID that are circulating? If it does, that could be the end of this pandemic. If it does not, then it just means everyone is going to get a cold this winter, and then the pandemic will continue on as it was.

      • by edwdig ( 47888 )

        Do we have any indication that someone who has already had c19 has been reinfected with Omicron? I was under the impression that re-infection was so rare as to be thought virtually impossible.

        That's completely wrong. At best, getting infected offers you a few months protection before the gained immunity fades and leaves you vulnerable again. But the antibodies people generate vary, and for some people, the ones generated aren't very good at preventing re-infection and they can get it again rather quickly.

        The mRNA vaccines are presenting your body with the best case scenario to generate antibodies. Watch how effective they are over time, and assume antibodies from infection will be less effective

        • That...doesn't make any sense.

          The mRNA vaccines copy a very specific protein of c19, not the whole thing. By extension, you'd expect your immune system to develop more robust immunity to an infection than the vaccine alone.

          The CDC disagrees with your position about reinfection; https://www.cdc.gov/coronaviru... [cdc.gov]

          They say a few cases have been reported, so I may have overstated things a bit, but it's still remarkably rare. Which aligns with my statement above about the differences between the vaccine and an

          • by ceoyoyo ( 59147 )

            The vaccines use a very specific protein that's critical to the virus infecting cells. It's also the protein that most of your natural immunity ends up targeting on the real virus. There's lots of good evidence that the vaccines, which include all kinds of tricks to produce a more robust immune response, do provide stronger protection than natural infection.

            There's also evidence that vaccination plus natural infection offers even stronger, and probably broader, protection.

          • by edwdig ( 47888 )

            Your body picks a specific point on the virus to target. We don't know exactly how it picks that point, but not everyone picks the same point. The point your body picked might be not great, or it might be highly prone to mutation, so the quality of the antibodies will vary.

            The vaccines expose you to an optimal point of the virus so that you'll get a specific immune response that's known to work well.

            As for the CDC line, I think you're reading too much into a single sentence. There's nothing to qualify what

          • The mRNA vaccines copy a very specific protein of c19, not the whole thing. By extension, you'd expect your immune system to develop more robust immunity to an infection than the vaccine alone.

            Not necessarily, and not in practice.
            The amount of antibodies developed from the vaccine can be higher, especially if it was a mild infection.

            For Omicron specifically, Pfizer, Moderna and AZ vaccines have been shown better than previous infection.
            https://www.biorxiv.org/conten... [biorxiv.org]

  • Makes sense (Score:4, Interesting)

    by SuperKendall ( 25149 ) on Wednesday December 22, 2021 @03:53PM (#62107021)

    The reason why cases are going down is simple.

    People figured out that Omicron isn't much of a concern, so they stopped getting tested if they felt only mildly ill.

    Also of course, Omicron passes trough people very quickly (under a week) so even though it's very infectious, it doesn't have a long lasting impact on the population.

    After this cases of all kinds of Covid should be way down for a good long while, the last gasp of the virus taking the same evolutionary path they all do.

    • Re:Makes sense (Score:5, Insightful)

      by Beryllium Sphere(tm) ( 193358 ) on Wednesday December 22, 2021 @04:38PM (#62107181) Journal

      That they all do?

      Smallpox was with us for thousands of years and stayed just as deadly the whole time and is only gone because we put intense effort into the eradication project.

      • Re:Makes sense (Score:5, Interesting)

        by Solandri ( 704621 ) on Wednesday December 22, 2021 @05:57PM (#62107411)

        and is only gone because we put intense effort into the eradication project.

        That is what worries me. All our vaccination efforts may be tilting at windmills. Smallpox and polio are the only two diseases we've eradicated because they only infect humans. Once all humans were vaccinated or infected and recovered, these viruses had nowhere to go and died.

        I've read numerous stories of COVID-19 being detected in dogs, cats, hamsters, pigs, bats, monkeys, ferrets, otters, mink, deer, etc. If COVID-19 jumps between species this easily, then vaccinating humans isn't enough. We'd need to vaccinate all those animals as well if we want to eradicate it. Which is virtually impossible. Even if we manage to vaccinate all humans, it will mutate in animals into a strain which can bypass existing vaccines, and jump back into humans.

        I'm increasingly doubtful we'll vaccinate our way out of this. And it's not because of the anti-vaxxers.

        • I'm increasingly doubtful we'll vaccinate our way out of this.

          I don't know why. I would expect it to behave like the multitude of other once-upon-a-time-killer-but-now-mutated influenzas that we currently keep a handle on--via vaccinations.

        • I distinctly recall news articles about peoples pet cats with Covid back when it first started as well as a Tiger at a zoo with it.

    • google Farr's law - epidemiological curves tend to fall at the same rate they rise.
    • The positivity rate of performed tests is still high, around 29% (!), which indicates a severe lack of testing. My hypothesis is similar to yours in that people with mild to moderate symptoms are just not getting tested any more, so actual case numbers continue to grow but people are just giving up on testing unless they have severe disease (but with vaccination and boosters it appears severe disease is very rare). Also remember it is summer in South Africa so their wave will likely look different than the
    • by kbahey ( 102895 )

      ... the last gasp of the virus taking the same evolutionary path they all do.

      It is actually rare that a virus will become less virulent.

      Here are some examples that have been around for a long time, yet, they are extremely deadly:

      - Smallpox, until it was eradicated by vaccination.
      - Polio, still exists in war torn countries (Afghanistan, Syria), but vaccination eliminated it elsewhere
      - Rabies, still deadly for both humans and animals that get it.

      So it is not a given that a virus will become more or less virul

      • by ceoyoyo ( 59147 )

        Well, *new* viruses do tend to "become less virulent" over time. That's not because the virus adapts, but rather because we do, and that process typically involves lots of people dying.

        At some point you reach an equilibrium where the virus goes extinct, we go extinct, or the virus and our immune systems reach a stalemate at some less-than-extinction level lethality.

        • An influenza virus does adapt. That's why it mutates.

          • by ceoyoyo ( 59147 )

            An influenza virus doesn't adapt *to become less virulent* because there's no selective pressure for it to do so. We adapt for viruses to be less likely to kill us, because there is selective pressure.

            I reread my post and it's pretty clear that's what I said.

        • The nature of mutations is that they are random. They can make the virus more or less contagious and/or more or less lethal. There is a strong evolutionary pressure for viruses to become more contagious, and a weak pressure for a virus to become less lethal.

          There's not a lot of rapidity in human evolution, viral evolution is rapid. It doesn't take a lot of time for a more contagious and less lethal variant to arise (if it's possible), and this appears to be what has happened to bring about omega. Humans jus

          • by ceoyoyo ( 59147 )

            Well, almost a million Americans have relinquished their influence on the genetic lottery.

            However, if you read my post you may note that I used the word "adapt", *not* the word "evolve." Surprisingly for an Internet comment, I sometimes choose my words with purpose. You see, we possess something called "the adaptive immune system". [wikipedia.org]

            Also, "a weak pressure for a virus to become less lethal" is a pretty big assumption. It's just as reasonable to assume pressure for a virus to become more lethal. Particularly fo

      • This is a specific type of virus, an influenza virus. It will mutate in the manner of influenzas, and not necessarily in the manner of other viruses.

  • Maybe it evolved into yet another strain: one that is super contagious, results in no tell-tale symptoms, and isn't picked up on the pcr or antigen tests anymore.

  • Some people try to sell hopium at each new wave. Omicon wave could be a spike in South Africa and have a long tail in Europe. Won't be the first time the epidemic takes different shapes according to the region and its population.
  • "If previous variants caused waves shaped like Kilimanjaro, omicron's is more like we were scaling the North Face of Everest,

    I'm glad to see famous mountains are the metric du jour instead of football fields and libraries of congresses.

  • The Authoritarians will, of course, take steps to "fatten the curve" as they have been doing for the last two years.

    So while the pandemic will be over in the "Third World", the Authoritarian Fascist counties (including Canada, the United States, Great Britain and Europe) will seek to prolong -- fatten the curve -- as much as they possibly can.

  • by LostMyBeaver ( 1226054 ) on Wednesday December 22, 2021 @10:36PM (#62108167)
    If we look at data, hasn't the pattern been :
    - Covid LOVES winter
    - Covid hibernates in mid summer

    I know... I know... it's Winter now
    • Ah, heads up. It's not winter everywhere. And where it's summer right now, Covid, courtesy Omicron, numbers are going through the roof.

      Previous variants did seem to go in to a lull through warmer and drier months, but that can be just because people were enjoying the great outdoors rather than breathing recycled air or some other environmental factor.

    • Sorry, no. Summer 2020 was the 2nd wave of COVID in the U.S.. The best we can do is speculate that the 2nd wave would have been worse if people were out of the sun and crowded together indoors.
    • Prior to Covid I never gave any of this much thought but one thing which seems apparent, the US has 2 cold seasons now with the almost ubiquitous use of climate control in the south. Peak of summer the south moves indoors. Just look at the curves and where the cases came from.
  • It reduced the rate of infections in South Africa.
  • Everyone needs to ask themselves if they should be afraid of getting covid. I had it. It was hardly even a cold for me. Having gotten it (before vaccines were available) made me wonder why I was afraid for so long. I suspect the data we have access to doesn't allow us to make rational choices. Instead, we are forced to weigh probabilities based on anecdotes and averages. At this point, we should be able to have a website where we can enter our vitals and see the real risk. I suspect most people would be sho
    • by kackle ( 910159 )
      The problems are various...

      There's a small chance of long term, if not permanent, damage (in my age group). I'm not interested in any such risk, thank you.

      You can get it over and over and over. My vaccinated nephew just got it a second time and it borked the wider family's Christmas plans and preparation.

      I personally know of three who died from it (albeit pre-vaccine availability), one was a family member.

      A younger coworker got it before the vaccines were around, and nine months later, everything
  • This is turning out just as South Africa said it would, but our politicians and mainstream media can't seem to let go of Covid19 as a tool to repress the masses they despise so much.

Think of it! With VLSI we can pack 100 ENIACs in 1 sq. cm.!

Working...