Users of RT-PCR reagents should read the IFU carefully to determine if manual adjustment of the PCR positivity threshold is necessary to account for any background noise which may lead to a specimen with a high cycle threshold (Ct) value result being interpreted as a positive result.
Up until COVID hit in 2020, neither WHO nor the CDC had ever considered a single positive PCR test sufficient for diagnosing viral infection.
PCR positive is no longer = Covid. You are not Covid now unless you get a second test to confirm it, and are presenting clinical symptoms. We shall see what the net impact of this indeed is.— Ethical Skeptic ☀ (@EthicalSkeptic) January 20, 2021
Released 20/21 Jan 2020https://t.co/giAYWjQFDB pic.twitter.com/axKemwS2Sx