Covid is HIGHLY contagious for only 3-5 days, and usually 1-2 of those days are PREsymptomatic

Therefore, routine screening [even before or without symptoms] is critical to breaking chains of transmission

1/
RapidAg test twice a week will detect nearly 100% of infections & in time to act… in time to break transmission

Breaking onward transmission is how we defeat this

... because the virus has to infect a whole new cohort every ~week to survive

2/ https://twitter.com/michaelmina_lab/status/1356849236852289536?s=20
PCR testing is great for diagnosing illness, but it rarely ever stops transmission

… because PCR can't scale up to the whole population twice-a-week

Like mowing the lawn with scissors

3/
PCR is used after symptoms show

… then takes a day to schedule

… and then 1-5 days to hear back

… so it will almost never be helpful to stop the spread of Covid

[Except perhaps in special places, with special onsite machines, like NFL locker-rooms]

4/
Public communication is critical:

If you get a negative rapidAg test result, the interpretation is that, if you did the test correctly, there's a 90+ percent chance you aren't contagious right then

5/
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