I've been:

1. Opening cereal/cracker/other boxes with gloves on, taking out the bag inside the box, and recycling the box. I figure the interior bag hasn't been touched in days, typically, if it was ever touched by human hands.

2. For other things, like bread, I've been moving the bread into clean ziploc bags.

3. Washing things like Apples and plastic milk jugs with soap and water.

Feels pretty paranoid but seems to make sense right now.