Something I don't understand about contact tracing:
I understand keeping people's identity private.
But how is the contact tracing happening? Is it all based on the ill person's memory, and perhaps that of their family, as to who they saw?
I've seen multiple reports saying "recent contacts have been notified" when a positive case is confirmed, but nothing, or very rarely, about situations where specific contacts cannot be determined -- let's say, a person used a specific gas pump or ATM machine or went into a specific store. I suppose cameras could ID other pump or ATM customers, but what about places without cameras? They never say "anyone who went through the McDonald's drive-thru on Thursday morning" and yet there are claims that all contacts have been notified. So either the patient is forgetting they used the drive-thru, or the tracers just don't think fellow drive-thru'ers are considered contacts?
Am I making any sense? I mean, I keep detailed notes of where I go each day, including who I am near. And in a tiny town I know most folks. But even so there are people who pass by me in the post office or hardware store I don't know. If I were sick, the only way to inform those people would be to make a public notice of appeal to everyone who was at X place at Y time. But I don't see that happening.