Birx: HALF of COVID positive tests may be FALSE POSITIVES (and CDC admits it)...if prevalence is low

US ADVISOR Dr Deborah Birx warned you can not assume the Covid test positive result is correct - it is likely to be wrong most of the time - a “false positive“ - IF PREVALENCE IS LOW - such as in the general population: She says: “If you have 1% of the population infected and you have a test that is only 99% specific, then if you find a positive, then 50% of time it will be a real positive and 50% of time it won’t be! [ie, it will be a false positive]“.