[qwerty1234599]

Grocery stores probably closer to zero. Reminds me of stranger danger.

You most likely will be infected by a family member or office coworker.

In march during the full lockdowns, something like 20% of the population was still meeting their friends and family behind closed doors like nothing was happening, and this is why the virus didn't die out in 2 weeks.

The reason why China welded apartment doors getting shut was not to prevent people getting out. It was to block family and friends of the apartment house inhabitants from visiting.