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Thread: About those PCR tests and their Threshold Cycles (CT)

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    Default About those PCR tests and their Threshold Cycles (CT)

    CDC finally specifying using lower CT thresholds for PCR tests, but only for the vaccinated

    by IWB
    May 2, 2021

    www.theblaze.com/op-ed/horowitz-cdc-issues-guidance-for-evaluating-post-vaccination-covid-tests-at-a-lower-standard
    Last August, the New York Times reported that so many PCR tests were netting false positives because they used more than 30 cycle thresholds (CTs) of amplification, often as many as 40-45 before finding a positive culture. To this day, the CDC has refused to change its guidance on the use of high CTs in determining positive results, needlessly forcing so many people, particularly asymptomatic children, into quarantine for no reason.

    Well, now the agency has finally changed its guidance — but only when it suits cronies.

    In a notice on its “COVID-19 vaccine breakthrough case investigation,” the CDC announced its plan to study the prevalence of “breakthrough cases,” meaning those who contract the virus even after having been vaccinated. Yesterday, former New York Times reporter Alex Berenson noticed this little gem in the guidance for determining those infected post-vaccination:
    “Clinical specimens for sequencing should have an RT-PCR Ct value ≤28.”
    Alas, the CDC has suddenly discovered the power of cycle thresholds on PCR testing in determining whether the positive results are real or meaningful. But here’s the problem:
    Where is this guidance when it comes to non-vaccinated people?
    As Berenson points out, a standard of 28 CTs applied to the general testing regime would preclude as many as 90% of cases from being recorded, especially when the virus is in low circulation.
    Wow. WOW. @cdcgov only wants to examine post-vaccine infections with a PCR threshold of 28 or under. That standard… t.co/PUGSeS99pm
    — Alex Berenson (@Alex Berenson)1619716838.0
    Almost eight months ago, the New York Times reported that cultures detected in 27 to 34 CTs seldom reveal any live virus, and specimens detected above 34 CTs never show any live virus. Most research shows that any virus that is detected only through a CT level above 25, and certainly above 30, is very likely to be a false or meaningless positive. This is why a Portuguese judge recently ruled that any positive test that used more than 25 cycle thresholds is not reliable and cannot be used to force quarantine.
    Each cycle threshold doubles the level of amplification of the previous CT. Thus, a CT of 40 is 1,024 times the amplification of a CT level of 30 (210 =1,024) and 32,768 times that of a CT of 25 (215=32,768). Clearly, not all positive results are equal, and knowing the CT level of your positive result is of utmost importance.

    Thus, the CDC is correct in not wanting false positives to work against the reputation of the vaccines, but why is it OK for false positives to work against the livelihood of Americans? Why is it that only when it comes to the reputation of the vaccines do they suddenly discover the science of false positives? Based on the current CDC standard, the entire contact tracing regime, even to the extent one maniacally believes they can trace a virus that 40% of the country already contracted, should be overhauled….
    h/t thc

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    Default Re: About those PCR tests and their Threshold Cycles (CT)

    ...

    ... O, how convenient:

    How the CDC is manipulating data to prop-up “vaccine effectiveness”
    New policies will artificially deflate “breakthrough infections” in the vaccinated, while the old rules continue to inflate case numbers in the unvaccinated.
    Kit Knightly
    May 18, 2021


    The US Center for Disease Control (CDC) is altering its practices of data logging and testing for “Covid19” in order to make it seem the experimental gene-therapy “vaccines” are effective at preventing the alleged disease.

    They made no secret of this, announcing the policy changes on their website in late April/early May, (though naturally without admitting the fairly obvious motivation behind the change).

    The trick is in their reporting of what they call “breakthrough infections” – that is people who are fully “vaccinated” against Sars-Cov-2 infection, but get infected anyway.

    Essentially, Covid19 has long been shown – to those willing to pay attention – to be an entirely created pandemic narrative built on two key factors:
    • Inflated Case-count. The incredibly broad definition of “Covid case”, used all over the world, lists anyone who receives a positive test as a “Covid19 case”, even if they never experienced any symptoms.
    Without these two policies, there would never have been an appreciable pandemic at all, and now the CDC has enacted two policy changes which means they no longer apply to vaccinated people.

    Firstly, they are lowering their CT value when testing samples from suspected “breakthrough infections”.

    From the CDC’s instructions for state health authorities on handling “possible breakthrough infections” (uploaded to their website in late April):
    For cases with a known RT-PCR cycle threshold (Ct) value, submit only specimens with Ct value ≤28 to CDC for sequencing. (Sequencing is not feasible with higher Ct values.)
    Throughout the pandemic, CT values in excess of 35 have been the norm, with labs around the world going into the 40s.

    Essentially labs were running as many cycles as necessary to achieve a positive result, despite experts warning that this was pointless (even Fauci himself said anything over 35 cycles is meaningless).

    But NOW, and only for fully vaccinated people, the CDC will only accept samples achieved from 28 cycles or fewer. That can only be a deliberate decision in order to decrease the number of “breakthrough infections” being officially recorded.

    Secondly, asymptomatic or mild infections will no longer be recorded as “covid cases”.

    That’s right. Even if a sample collected at the low CT value of 28 can be sequenced into the virus alleged to cause Covid19, the CDC will no longer be keeping records of breakthrough infections that don’t result in hospitalisation or death.
    From their website:
    As of May 1, 2021, CDC transitioned from monitoring all reported vaccine breakthrough cases to focus on identifying and investigating only hospitalized or fatal cases due to any cause. This shift will help maximize the quality of the data collected on cases of greatest clinical and public health importance. Previous case counts, which were last updated on April 26, 2021, are available for reference only and will not be updated moving forward.
    Just like that, being asymptomatic – or having only minor symptoms – will no longer count as a “Covid case” but only if you’ve been vaccinated.

    The CDC has put new policies in place which effectively created a tiered system of diagnosis. Meaning, from now on, unvaccinated people will find it much easier to be diagnosed with Covid19 than vaccinated people.

    Consider…
    Person A has not been vaccinated. They test positive for Covid using a PCR test at 40 cycles and, despite having no symptoms, they are officially a “covid case”.

    Person B has been vaccinated. They test positive at 28 cycles, and spend six weeks bedridden with a high fever. Because they never went into a hospital and didn’t die they are NOT a Covid case.

    Person C, who was also vaccinated, did die. After weeks in hospital with a high fever and respiratory problems. Only their positive PCR test was 29 cycles, so they’re not officially a Covid case either.
    The CDC is demonstrating the beauty of having a “disease” that can appear or disappear depending on how you measure it.

    To be clear: If these new policies had been the global approach to “Covid” since December 2019, there would never have been a pandemic at all.

    If you apply them only to the vaccinated, but keep the old rules for the unvaccinated, the only possible result can be that the official records show “Covid” is much more prevalent among the latter than the former.

    This is a policy designed to continuously inflate one number, and systematically minimise the other.

    What is that if not an obvious and deliberate act of deception?

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    Default Re: About those PCR tests and their Threshold Cycles (CT)

    Quote Posted by Gwin Ru (here)
    The CDC is demonstrating the beauty of having a “disease” that can appear or disappear depending on how you measure it.
    What a con the whole thing is - manipulating data to (dishonestly) support the scamdemic / 'vaccination' agenda - but most/many people have no idea that it's going on - why would they if they just listen to and believe the colluding MSM...

    I just went to look for Kary Mullis speaking - inventer of the PCR test.. saying that if you do PCR well "you can find anything in anybody.."

    At the beginning (he's talking about AIDS and 'free viral RNAs'...) the Coronavirus Fiasco hasn't started at that point)... he says ...

    "I don't think you can misuse PCR..."

    Well I don't think he would say that now after the PCR test has clearly been misused... but he (conveniently?) died in August 2019..... I imagine he would be making a huge fuss about it if he was still around and maybe if he was still around they couldn't have got the scamdemic off the ground....





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    Default Re: About those PCR tests and their Threshold Cycles (CT)

    greybeard just posted this on another thread so I'm putting it here as well...

    they could not have got away with misusing the PCR test if Kary Mullis was still alive...
    he would be furious and devastated to know that his invention was being used and abused to aid and abet a fake pandemic...indeed is the foundation of it...

    https://www.bitchute.com/video/dFwqqPOhgYKy/



    Source: https://www.bitchute.com/video/dFwqqPOhgYKy/
    Last edited by Tintin; 22nd May 2021 at 21:27. Reason: Embedded video

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    Default Re: About those PCR tests and their Threshold Cycles (CT)

    Sweden Drops PCR Tests: RNA From Viruses Can Be Detected For Months After Infection

    Source: technocracy.news
    Published: May 23, 2021
    Technocrat medical policymakers have used fraudulent PCR tests from the start of the Great Panic of 2020, but critics were censored, shamed and silenced. Sweden suddenly discovers that the PCR test is not capable of determining infection. ⁃ TN Editor
    The following is translated from the Swedish Public Health Agency.

    Guidance on criteria for assessment of freedom from infection in covid-19

    The Swedish Public Health Agency has developed national criteria for assessing freedom from infection in covid-19.

    The PCR technology used in tests to detect viruses cannot distinguish between viruses capable of infecting cells and viruses that have been neutralized by the immune system and therefore these tests cannot be used to determine whether someone is contagious or not.

    RNA from viruses can often be detected for weeks (sometimes months) after the illness but does not mean that you are still contagious. There are also several scientific studies that suggest that the infectivity of covid-19 is greatest at the beginning of the disease period.

    The recommended criteria for assessing freedom from infection are therefore based on stable clinical improvement with freedom from fever for at least two days and that at least seven days have passed since the onset of symptoms.

    For those who have had more pronounced symptoms, at least 14 days after the illness and for the very sickest, individual assessment by the treating doctor.

    The criteria have been developed in collaboration with representatives of the specialty associations in infectious disease medicine, clinical microbiology, hygiene and infection control.

    These have most recently been discussed in the group at a meeting on 19 April 2021 due to the new virus variants.

    The assessment was then that no update was needed. The recommendations will be updated as new knowledge about covid-19 infectivity is added.


    Read full story here…

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