It seems likely either delivery people, GF, or mom. All it takes is one person in your network to be in someone else's network, and someone there is in someone

It seems likely either delivery people, GF, or mom. All it takes is one person in your network to be in someone else's network, and someone there is in someone else's network, and suddenly you get COVID because you thought you were safe and they thought they were safe and they thought they were safe...