The NY Times now recounts the futility of contact tracing. They note:
Dr. Nirav Shah, who heads Maine’s coronavirus response, explained how his state would scale back its ambitions: Contact tracers would touch base with each new patient only once, and not through the course of their illness, to make sure they were well and quarantining....New Hampshire last week said that it would only trace cases of people connected to outbreaks or in specific at-risk age or racial groups... Minnesota’s Itasca County this month said that it was abandoning contact tracing, advising the public that, “if you are in a group setting, just assume that someone has Covid.” ... In North Dakota, state officials said last month that they could no longer have one-on-one conversations with everyone who may have been exposed.
We said all of this more than six months ago, and most likely billions of dollars ago. As we noted then the dynamics of the virus transmission, which frankly we still do not understand despite the Government's Science etc, make it such that tracing is near impossible. Add to that the fact that no one answers their phone any more, despite an alleged law making scam call illegal, this time the FCC incompetence in addressing the problem, there is no way to even start.
Contact tracing is an academic exercise taught by ivy tower ideologues. In real life one need just look at how real NYC detectives work a single crime. My grandfather was a Lieutenant in charge of Homicide in the 6th Precinct in New York. It demands a lot of foot work, bad memories, strange people and the like. Contact tracing was doomed from the start, but that is the real world versus "science".