Covid wasn't a virus, as it could not be replicated in a petri dish in the allotted time given for a virus, bacteria, or fungi. A good real estate agent would tell you, it is about "Location, Location, Location" which environmental satisfies that criteria. This is very important, 7D x 3T, and knowing someone's location ahead of time,, is the open shortest path as far as costing goes because it provides a .vantage point.