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How are Americans supposed to “trust the science” when the CDC keeps changing what it is? The CDC just made a major change to its testing regimen that is probably the largest change since last year when it lowered the cycle rate for PCR tests. Now the CDC is telling those infected with COVID-19 not to retest with PCR tests after quarantine because the tests could come back positive even after the infection has passed. Dr. Joseph Mercola reports on his blog, Mercola.com:
PCR Test Is Not Useful in Determining COVID Infectiousness
One reason the CDC has changed its rules to not require retesting for COVID-19 infection after quarantine is that the PCR tests used to determine infectivity can stay positive for up to 12 weeks.
The rapid antigen tests also may be less sensitive to the Omicron variant, according to CDC director Dr. Rochelle Walensky, but even so, if you test negative on the rapid test and you have symptoms, you need to get the PCR test anyway.
Then, if you have symptoms and test positive on the PCR test, you just don’t have to retest after you’ve quarantined, as the long positivity rates for the PCR tests “would have people in isolation for a very long time if we were relying on PCRs,” she told ABC News.
SOURCE: ABC News December 29, 2021
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