Several problems with his bullet points.
1. PCR is used for testing all the time in HIV and some other diseases
2. When he says, "There are an increasing number of positive coronavirus tests in people with no connection with other coronavirus cases," this is exactly what you expect in a virus spread by air and spittle.
plus what Jonathan said
From: Mitchel Cohen <[log in to unmask]
To: SCIENCE-FOR-THE-PEOPLE <[log in to unmask]
Sent: Thu, Mar 12, 2020 8:23 am
Subject: Corona Virus?
David Crowe is a Canadian progressive person, not a right-winger.
Wanted to know your thoughts here, I don't know the answers ....
From: David Crowe <[log in to unmask]
Please read my article:
But the short version is this. Coronavirus is being tested for using the
PCR technology, looking for specific strands of RNA. A few points:
- (major point) Nobody has ever purified a virus and shown that it
contains this specific RNA. It is just assumed that this RNA is viral.
- PCR is a manufacturing technique, it is not intended for testing.
- PCR is ultra sensitive. One molecule of RNA or DNA in the lab can
produce a false positive (e.g. cross contamination).
- One recent paper showed the majority of patients going from Infected
to Uninfected and back to Infected within a few days.
- There are an increasing number of positive coronavirus tests in
people with no connection with other coronavirus cases.
- PCR used for testing is not binary (positive/negative). It is a
cyclic test, and the result is the number of cycles required to detect
RNA or DNA. The number of cycles used as the cutoff is arbitrary and is
not the same in all labs. For example, one lab used 36 cycles as the
cutoff for positive, with 37-39 being "indeterminate", and 40
or over being negative. Another used 37 cycles, with no indeterminate.
- If PCR was run for many more cycles it is likely that everyone would