2 ms·

I think you'll learn something from 3brown1blue's youtube video on simulating different intervention techniques. It's from a few weeks ago, but it very clearly

• Retric 7y ago
  3brown1blue’s video is a very simplistic introduction to the subject. It’s illustrative not predictive. Contact tracing is clearly useful, but on it’s one does not change the basic reproduction numbers much. Look at South Korea which still has active infections despite active contact tracing and very successful social distancing. Contact tracing COVID-19 is suplimental not a solution. PS: As to my point, if you’re a grocery store employee in NYC you are likely to have been in contact with someone with COVID-19 in the last week. We can’t simply send all of them home, that’s the issue with contact tracing when a meaningful percentage of the population is infected. You need looser restrictions which reduces effectiveness.