This is hot stuff! E.g. for some time now there were doubts published on the over expression issue of the PCR (Polymerase chain reaction) test! Myself, I have had some doubts about the high number of new cases and, in particular, death cases beginning in July of 2020. What took the WHO so long to correct the issue!
"The World Health Organization (WHO) has cautioned experts not to rely solely on the results of a PCR test to detect the [SARS-CoV-2] virus.
In updated guidance published on Jan. 20, the WHO said that lab experts and health care practitioners should also consider the patient’s history and epidemiological risk factors alongside the PCR test in diagnosing the ... virus.
The new guidance could result in significantly fewer daily cases.
“Most PCR assays are indicated as an aid for diagnosis, therefore, health care providers must consider any result in combination with timing of sampling, specimen type, assay specifics, clinical observations, patient history, confirmed status of any contacts, and epidemiological information,” the guidance says. ...Scientists and physicians have raised concerns for many months of an over-reliance on and a misuse of the PCR test as a diagnostic tool since it can’t differentiate between a live infectious virus from an inactivated virus fragment that is not infectious.
Additionally, the high cycle threshold values of most PCR tests—at 40 cycles or higher—increases the risk of false positives. ...
And no matter how many times an [same] individual is tested, each positive test is counted as a separate case. ..."
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