It isn't even 80% effective from the scientific journals I've read last year, the best they can do is 40% and lower, I think there is some inherent limitation in its accuracy.
I'd like to point out that many countries aren't running multiple tests to make up for this low accuracy like South Korea. It is the general consensus among experts that the actual case numbers are far far higher than what is reported
So if the 40% rate is true then the law of large number suggests the screening test is completely useless because it misses the 60% of the time. It's just like the Casino where the virus has a huge edge over our detection and prevention measures.
I'd like to point out that many countries aren't running multiple tests to make up for this low accuracy like South Korea. It is the general consensus among experts that the actual case numbers are far far higher than what is reported
So if the 40% rate is true then the law of large number suggests the screening test is completely useless because it misses the 60% of the time. It's just like the Casino where the virus has a huge edge over our detection and prevention measures.