COVID Tests May Inflate Numbers by Picking Up 'dead' Virus
/In a video interview from July, Dr. Anthony Fauci appeared to acknowledge that large numbers of positive COVID-19 cases may arise from oversensitive tests that pick up mere fragments of the virus rather than active, viable infections.
If true, many patients may have been receiving false-positive test results — causing much needless anxiety and disruption to everyday life — while the numbers of COVID-19 cases reported by public health authorities and major COVID tracking websites could be vastly overstated.
The admission came on a July 16 episode of This Week in Virology, a longtime science podcast hosted by Columbia University virologist Vincent Racaniello. Fauci, the director of the National Institute of Allergy and Infectious Diseases, had joined the program to discuss various aspects of the COVID-19 pandemic, including testing.
Concerns have been raised over the last several months that laboratory tests widely deployed to detect SARS-Cov-2 — what are known as polymerase chain reaction, or PCR, tests — may in fact be picking up remnants of the virus instead of meaningful levels of infection. Some critics have argued that significant numbers of purportedly positive COVID-19 tests are actually not infectious at all.
At the center of the debate is the "cycle threshold" at which a PCR test operates. PCR tests work by multiplying a virus fragment over a series of cycles until it can reliably detect and confirm the virus within a sample. The more cycles a test must go through before it detects the virus, the smaller and weaker the original sample was.
High cycles, in other words, are expected to correlate to weaker viral samples, indicating that a patient's "positive" case in that context may be more or less meaningless from an epidemiological or virological perspective.
Joining the hosts of This Week in Virology in July, Fauci directly responded to a question about COVID-19 testing, specifically how patients with positive tests might determine whether or not they are actually infectious and need to quarantine.
"What is now sort of evolving into a bit of a standard," Fauci said, is that "if you get a cycle threshold of 35 or more ... the chances of it being replication-confident are minuscule."
"It's very frustrating for the patients as well as for the physicians," he continued, when "somebody comes in, and they repeat their PCR, and it's like [a] 37 cycle threshold, but you almost never can culture virus from a 37 threshold cycle."
"So, I think if somebody does come in with 37, 38, even 36, you got to say, you know, it's just dead nucleotides, period."
If true, many patients may have been receiving false-positive test results — causing much needless anxiety and disruption to everyday life — while the numbers of COVID-19 cases reported by public health authorities and major COVID tracking websites could be vastly overstated.
Vincent Racaniello, the Higgins Professor at Columbia University's Department of Microbiology & Immunology and the host of This Week in Virology, echoed Fauci's remarks when reached for comment on Sunday.
"I agree that in general, Ct values over 36 do not represent infectious virus, only pieces of viral RNA," he told Just the News. "Of course the Ct can also depend on the machine used and the primers so the number might vary depending on the lab."
"I recently had a PCR of Ct 34.7 which I considered negative," he said. "On retest in 3 days it was negative."
High-threshold tests appear to be widely in use in the United States. A review by the New York Times in August found that, of just one batch of positive tests from New York, Massachusetts and Nevada, "up to 90 percent of people testing positive carried barely any virus."
Positive COVID-19 tests have been greatly increasing since the beginning of October. On Thursday of this week, the U.S posted a new one-day record of nearly 120,000 new cases, though — as has been the case for the course of the pandemic — it is unclear how many of those test results are indicative of actual infection and how many are the product of the high cycle thresholds of the kind Fauci warned about.
Trust in the accuracy of COVID numbers has been in decline for months. Additionally, despite a record number of COVID cases being reported in the United States, the media has been so consumed with the hype related to a possible Biden presidency, there has been absolutely no mention of the increase in cases. This has driven many to further believe that although the virus does have real effects and implications, the media appears less concerned with facts surrounding the data, while more inclined to hype what can be used to spin a narrative.
KPGZ News – Jim Dickerson and Just the News contributed to this story