New Lancet Article Suggests 50-75% of “Positive” PCR Tests Are Not Infectious People


by Arjun Walia, Collective Evolution:

  • The Facts:A recent article published in The Lancet medical journal explains that PCR tests can be “positive” for up to five times longer than the time an infected person is actually infectious.
  • Reflect On:Why are certain viewpoints, opinions, studies, scientists and doctors being censored and/or ignored for presenting data that completely contradicts what we are receiving from government health authorities.

PCR testing (polymerase chain reaction testing) has come under fire from numerous doctors, scientists, politicians and journalists since the beginning of this pandemic. Not everyone would know this if their only source of information was mainstream media however, as they’ve chosen not to cover the controversy surrounding it. This is not to say that PCR testing hasn’t been praised as a useful tool to determine a covid infection, but again, there are great causes for concern that aren’t really being addressed.


As far back as 2007, Gina Kolata published an article in the New York Times about how declaring pandemics based on PCR testing can end in a disaster. The article was titled Faith in Quick Test Leads to Epidemic That Wasn’t.  In July, professor Carl Heneghan, director for the centre of evidence-based medicine at Oxford University, an outspoken critic of the current UK response to the pandemic, wrote a piece titled “How many Covid diagnoses are false positives?” He has argued that the proportion of positive tests that are false in the UK could also be as high as 50%.

The Deputy Medical Officer of Ontario, Canada, Dr. Barbara Yaffe recently stated that COVID-19 testing may yield at least 50 percent false positives. This means that people who test positive for COVID may not actually have it. Former scientific advisor at Pfizer, Dr. Mike Yeadon,  argued that the proportion of positive tests that are false may actually be as high as 90%.

Furthermore, 22 researchers have put out a paper explaining why, according to them, it’s clear that the PCR test is not effective in identifying COVID-19 cases, and that as a result we may be seeing a significant amount of false positives. You can read more about that here.

These are simply a few of many examples from the recent past, and it’s concerning because lockdown measures and more are based on supposed positive “cases.”

Another concern recently raised comes from an article  published in The Lancet medical journal titled “Clarifying the evidence of SARS-CoC-2 antigen rapid tests in public health responses to COVID-19.”

In it, the authors explain that most people infected with COVID are contagious for approximately one week, and that “specimens are generally not found to contain culture-positive (potentially contagious) virus beyond day 9 after the onset of symptoms, with most transmission occurring before day 5.” They go on to explain:

This timing fits with the observed patterns of virus transmission (usually 2 days before to 5 days after symptom onset), which led public health agencies to recommend a 10-day isolation period. The sort window of transmissibility contrasts with a median 22-33 days of PCR positivity (longer with severe infections and someone shorter among asymptomatic individuals). This suggests that 50-75% of the time an individual is PCR positive, they are likely to be post-infectious.

Once SARS-CoV-2 replication has been controlled by the immune system, RNA levels detectable by PCR on respiratory secretions fall to very low levels when individuals are much less likely to infect others. The remaining RNA copies can take weeks, or occasionally months, to clear, during which time PCR remains positive.

They explain:

However, for public health measures, another approach is needed. Testing to help slow the spread of SARS-CoV-2 asks not whether someone has RNA in their nose from earlier infection, but whether they are infectious today. It is a net loss to the health, social, and economic wellbeing of communities if post-infectious individuals test positive and isolate for 10 days. In our view, current PCR testing is therefore not the appropriate gold standard for evaluating a SARS-CoV-2 public health test.

An article published in the British Medical Journal explains:

It’s also unclear to what extent people with no symptoms transmit SARS-CoV-2. The only test for live virus is viral culture. PCR and lateral flow tests do not distinguish live virus. No test of infection or infectiousness is currently available for routine use. As things stand, a person who tests positive with any kind of test may or may not have an active infection with live virus, and may or may not be infectious.

The relations between viral load, viral shedding, infection, infectiousness, and duration of infectiousness are not well understood. In a recent systematic review, no study was able to culture live virus from symptomatic participants after the ninth day of illness, despite persistently high viral loads in quantitative PCR diagnostic tests. However, cycle threshold (Ct) values from PCR tests are not direct measures of viral load and are subject to error.

Searching for people who are asymptomatic yet infectious is like searching for needles that appear and reappear transiently in haystacks, particularly when rates are falling. Mass testing risks the harmful diversion of scarce resources. A further concern is the use of inadequately evaluated tests as screening tools in healthy populations.

The UK’s testing strategy needs to be reset in line with the Scientific Advisory Group for Emergencies’ recommendation that “Prioritizing rapid testing of symptomatic people is likely to have a greater impact on identifying positive cases and reducing transmission than frequent testing of asymptomatic people in an outbreak area.”

The academics who published this paper are one of many explaining how another approach is needed, given the fact that PCR tests are the basis of lockdowns that might have already, and will kill more people than COVID itself, all for a virus with a 99.95% recovery rate for people under the age of 70. Many are in fact calling for the end of testing for asymptomatic people.

Michael Levitt, a medical professor at Stanford University and a Nobel Laureate for chemistry is one of many who has been emphasizing this:

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