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Forums - General Discussion - Coronavirus (COVID-19) Discussion Thread

SvennoJ said:
CaptainExplosion said:

Feels like this nightmare is never going to end because of fucking idiots who won't wear masks, won't social distance, and won't take vaccines. -_-

Some people will only believe it's a problem after they're dead.

"Everybody's got their problems,"
"Everybody says the same things to you."
"It's just a matter how you solve them,"
"And knowing how to change the things you've been through."

-

"Part of me, won't agree,"
"Cause I don't know if it's for sure."
"Suddenly, suddenly,"
"I don't feel so insecure."



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Europe is losing their supremacy in COVID deaths fast. Belgium is gonna lose their top spot to Peru, while US, Chile and Brazil are rushing past the previous hotspots of UK, Spain, Italy and Sweden.



If you demand respect or gratitude for your volunteer work, you're doing volunteering wrong.

vivster said:
Europe is losing their supremacy in COVID deaths fast. Belgium is gonna lose their top spot to Peru, while US, Chile and Brazil are rushing past the previous hotspots of UK, Spain, Italy and Sweden.

Its gonna take some time for them to pass Belgium.

858 deaths pr million, is 283,000+ people in the US.
US is still 110,000+ people off.
That wont happend until end of the year.

Peru could pass Belgium in that stat, within a week.
Chile and Brazil is still far off.... possibly end of year as well.



According to a recent study from the Karolinska Institute in Sweden, T-Cell reactivity against SARS-CoV-2 increased from 28% in 2019 preserved blood samples to 46% in 2020 blood samples from healthy donors. That would suggest that, unless there has been a massive increase in the prevalence of some other virus that induces cross-immunity to SARS-CoV-2 around the same time, we can infer that 46 - 28 = 18 + (28 x 0.18) = 23.04% of the population has been exposed to SARS-CoV-2 in Sweden this year, plus whoever has been diagnosed positive in the antigen tests. I think antibody tests alone suggested about half that number, suggesting the importance of gauging cellular immunity.

On the other news, antibody data from Daegu in South Korea suggests the true prevalence of the virus there was 27 times more than what has been oficially diagnosed (around 6.2% of the population, compared to 0.033% having antibodies in the rest of South Korea). The relatively low IFR there (0.11% compared to 0.68% in the rest of South Korea, based on previous testing that excluded Daegu) suggests it was mainly younger people that drove the initial Daegu outbreak in February, compared to other places in Europe etc. where it started in hospitals and retirement homes. Of course, as shown above, real prevalence could be significantly higher.



 

 

 

 

 

numberwang said:
SvennoJ said:

Where do you get the idea of herd immunity? Less deaths doesn't mean herd immunity at all.

What happened is that those more at risk and the elderly are actually taken precautions, basically have been hiding for the past 5 months like us. The average age of infected people has dropped dramatically while treatment has also gotten better. Less people with severe symptoms and better options for those that need help. Mobility trends are still far below normal, many people are working from home or lost their job. Masks are helping and more frequently used. However Covid-19 is on the rise again in Europe and keeps popping back up everywhere else as well. Even Italy is increasing again, no herd immunity.

The only reason we're not at millions of deaths is because of actions taken. People are not as stupid as their governments and those at risk do look out for themselves. Deaths are still on the rise world wide, over 40K last week, 752K total as of yesterday, still a 2.4% CFR. Europe's CFR is 1.7% atm.

I can't address all of the speculations but time will tell anyway. Covid as a lethal disease is not on the rise in Italy. There might be some rare lethal cases left for people who kept hiding in a vacuum container but no second wave or anything. CFR numbers are biased bc we are only looking at those few who had no immunity beforehand and they were indeed at a higher risk of dying but that is not representative of the overall population.

There were multiple studies showing that >50% of the uninfected population have existing T-cells against Covid-19, probably a cross-immunity from common corona viruses. You don't need 100% coverage for herd immunity so existing immunity and some degree of exposure will stop the spread of the virus.

Importantly, we detected SARS-CoV-2-reactive CD4+T cells in 40%–60% of unexposed individuals, suggesting cross-reactive T cell recognition between circulating ‘‘common cold’’ coronaviruses and SARS-CoV-2.

https://www.cell.com/cell/pdf/S0092-8674(20)30610-3.pdf?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0092867420306103%3Fshowall%3Dtrue

 

Yeah, deaths are down... but so are the cases due to all the measures taken by the government. This has nothing to do with herd immunity.



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numberwang said:
Torillian said:

Where does that article say anything about false positives? PCR tests are extremely accurate and almost never give a false positive to my knowledge so I'd be interested to know where you get the information that up to 5% of results can be false positives. 

I've seen an overview page yesterday about specificity and sensitivity for different PCR tests on the market but I can't find that site right now. The claimed range was 0.2-5% for specificity error (false positives) and typically less for sensitivity error (false negatives). I remember that common corona viruses increase false positives for Covid as well. Anyway what's the point of increased testing if all you get is something so close to nothing?

Netherlands are a more interesting example with a "second wave" of cases created by some real infections and increased testing. We could see a lag of about 1 week between cases and death during the first wave but now we got 4 weeks of second wave with no more deaths. Herd immunity achieved.

You should have a look who's infected in that second wave there. Just like here in Luxembourg, most of the new infectees were under the age of 40, and since we have not just good, but more to the point functional and functioning healthcare systems over here, persons under the age of 50 don't die from the disease.

Increased testing just means you can find asymptomatic patients more easily.

Luxembourg can also actually disprove your theory that the increase just comes from increased testing. We ended the first mass testing campaign on July 7 for the summer break (will resume in mid September), after that the number of daily tests went down substantially from 22k to 7k. Despite this, cases continued to climb and peaked twice, first on July 16 and then again on July 29 with 163 and 158 cases respectively, much higher than the 61 cases we had on July 7 (which still was the highest number of cases we had since April 16 at the time).

Testing has been mostly stable since mid-July but only in August did we see an inversion of the trend and case numbers going down. And this decrease boils down to tighter controls in café/bars and festive sites where the youth partied the end of the lockdown and infected everybody for a second wave, not any change in test numbers.



8/18/20 - Covid-19 - Global cases: 22 million
US cases - 5.6 million

Where is Spoke? Spoke, we need an update on your charts. NP is begging to see an update. ;)



Here in Aus we just had our lowest daily case count in over a month, and for my state (which has been the epicenter for the current outbreak) the 4th day running in the 200s range, down from the 700s at the second wave's peak. Safe to say at this point we're over the summit, the second wave is winding down.

Now we just gotta make sure we don't get complacent again; after the first wave people were too quick to go back to normal as if we weren't still in a pandemic.



Mississippi quarantines more than 2,000 students and 500 teachers as hundreds tested positive for coronavirus, but the governor says, 'It doesn't mean they caught it there ' https://www.businessinsider.com/mississippi-schools-reopen-2500-students-teachers-coronavirus-quarantine-2020-8
Wonder if we will see a spike in cases next month again due to school openings and labor day coming up



jason1637 said:
Mississippi quarantines more than 2,000 students and 500 teachers as hundreds tested positive for coronavirus, but the governor says, 'It doesn't mean they caught it there ' https://www.businessinsider.com/mississippi-schools-reopen-2500-students-teachers-coronavirus-quarantine-2020-8
Wonder if we will see a spike in cases next month again due to school openings and labor day coming up

I mean who knows how these things go right? could all just be... happenstance? that just randomly 100s of students all test possitive for it.
Sure governor :)