Should we build a real-time database with all citizens and their probable infection status, and synchronize it with phone locations to trace all physical encounters?
It means that once we establish full coverage and we find a new case, we can test everyone they met or touched the same surfaces. Public surfaces can be regularly disinfected, so the temporal window is manageable.
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Assuming you have full coverage and found a new case in the data, who is going to locate this person and the tens or hundreds of possible 1st degree contacts (2nd, … ad nauseam). It’d be easier to just lock everyone down and start testing.
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Initially, we need to lock everyone down and start testing, yes. But the database would make it possible to restart public life after couple of weeks, instead of waiting two weeks beyond the last new case.
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