Null - https://t.co/xf4oHNrwHp 'The PCR test looks for piece of RNA in swab sample taken from a person. That piece of RNA is PRESUMED to be part of the virus. But since you don’t have an isolated purified specimen of virus itself assumptions about that piece of RNA are null & void'.

9:42am PST - February 4th, 2021

https://t.co/xf4oHNrwHp 'The PCR test looks for piece of RNA in swab sample taken from a person. That piece of RNA is PRESUMED to be part of the virus. But since you don’t have an isolated purified specimen of virus itself assumptions about that piece of RNA are null & void'.

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ALISON PEEL (@alisonfletch1)