Hi; I built all of the contact tracing analytics for one of the Harvard hospitals during the pandemic. Also had a parent that was clin epi for 25 years. The en

Hi; I built all of the contact tracing analytics for one of the Harvard hospitals during the pandemic. Also had a parent that was clin epi for 25 years. The entire effort, using essentially every technology applied, was useless. It was for many reasons, but primarily because the asymptomatic rate was very, very high, that there was no way to actually trace anything. Where or who you got Covid from was pure speculation for a majority of positive cases. Scales and rates matter. With TB you have a very high fidelity, testable, slow spreading causal chain. Which is why TB tracing programs are effective, and good public health policy. Our national Covid policies were ineffective, to say the least.