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Cross posting this from the Yankees thread:
The real issue with the PCR test is the over sensitive nature. The vaccine does not prevent you from being exposed. But it trains your body to deal with the virus quickly and efficiently. You never develop enough virus to be a transmitter.
BUT BUT BUT, the PCR test at 40 cycles is multiplying the amount of virus RNA by a Trillion. (2 to the 40th power). It can pickup the tiny amount of virus in a vaccinated person who is exposed.
For people who have been vaccinated, the Antigen test is a much better choice. It only goes positive if you have a full infection.
These are "cases" where using the PCR test is not appropriate.
As an another alternative, the PCR test can be used, but you need to supply the cycle data. Someone who tests positive at cycle 20 has 1 million times as much virus as someone who tests positive at cycle 40.
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James
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
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