"Arlen Holder" wrote in message
...
On Wed, 16 Sep 2020 16:21:07 +1000, wrote:

It will tell you that you have been that close to that individual
for that long if they later turn out to be positive.

And what if that asymptomatic person never got tested?

Irrelevant to the fact that plenty of those who were initially
asymptomatic initially and that some do get tested anyway.