Is CDC moving toward forever masking?

[Mountain Man]

Presymptomatic spread is well documented, and it happens even more easily with the delta variant.

But, again, only in cases of prolonged interaction, such as within a family. The chances of contracting the China flu simply by walking through a grocery store are about the same as your chances of walking outside of that same store and being struck by lightning.

[Stoic]

But, again, only in cases of prolonged interaction, such as within a family. The chances of contracting the China flu simply by walking through a grocery store are about the same as your chances of walking outside of that same store and being struck by lightning.

What evidence do you have that the chances of contracting covid-19 by walking through a grocery store are that low?

[Mountain Man]

What evidence do you have that the chances of contracting covid-19 by walking through a grocery store are that low?

Based on the evidence that it is spread primarily through prolonged contact with a contagious person.

[Stoic]

Based on the evidence that it is spread primarily through prolonged contact with a contagious person.

Certainly prolonged exposure increases the likelihood of transmission. But you haven't provided numbers for either case. I think that's because nobody really knows.