RandomTokyoGuy
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Yes, actually, it is sufficient for most people to comply.
Let's say we have 100 infected people who are quarantined, and the virus has a periodic R0 of 2.2.
If none of them are quarantined, there will be 220 infected people in the next round, maintaining the periodic R0 of 2.2..
If 80% of them obey self quarantine, there will only by 44 cases, for a periodic R0 of 0.44.
If the R0 drops below 1, the epidemic will burn out.
So yes, all you need is most people to cooperate.
That is true as long as those 44 new infections quarantine themselves at the same rate, but if they don't the next cycle is already back to about 100. So the question is if those 44 guys will be aware of their infection and most of them will probably not be aware of it, as we have flu and cold season, which happens to be much more common and have similar symptoms.
There is also a question if really a majority will quarantine themselves, if they live in poverty and very much depend on their daily earnings and the government doesn't support them, which would probably be the case for a number of people in SE Asia or Africa.