I am trying not to speculate too much how we got it but generally I agree. We used alcohol spray and bleach wipes on all our delivered groceries, but in hindsight it seems to me like the delivery drivers were the likely carrier.

In most countries with successful quarantines, these people are regulated and tested, but for us it is kind of the opposite. These are people paid hourly and highly dependent upon a paycheck. It is an incentivized super-spreader paradigm if you think about it.