> At the time, how were they supposed to know, by looking into their crystal ball? You pay attention to the news reports showing that despite locking down the

> At the time, how were they supposed to know, by looking into their crystal ball? You pay attention to the news reports showing that despite locking down the passengers of the Pacific Princess cruise ship in their cabins, the disease continued to spread from cabin to cabin? What other theory than airborne spread fits that data?