Interesting podcast. Explains in very simple terms the infection process, and also the differences between the testing kits - PCR vs at home molecular vs at home antigen. Start at 3:00 for general covid blah blah, start at 13:10 for testing.
https://open.spotify.com/episode/57v...iIQ&t=180&nd=1
From what I can gather, at home antigen, which is what we are given, needs the highest viral load to return a positive result, which might explain why some people have a negative RAT but a positive PCR. It would seem if you want to rely on RAT, like for high risk settings, you should be testing consecutive days during your at risk period. Fat chance with current supply.
My conclusion from this podcast is...RAT or no RAT, its going to spread. People will return a false negative RAT, go to work, and spread it. This might also explain why health officials were not keen to use RAT during delta.