It doesn't appear that they have a list in this and other articles. It seems they're randomly knocking on doors, and asking.
If they have a "list" then that is bad.
We thought about this as well. They do have a list of who was vaccinated, and each twp has a list of taxpayers and their addresses. By comparing the two, they can subtract out the people who were vaccinated, then the people that are left weren’t.
So when you get a shot and fill out information, do they ask for address? They could have a database that puts that information into the system and another program that spits out the addresses not on the vaccinated list.
Heck, I do not know and if someone does get harmed, this only screams more gun control.