Response to Norman Pieniazek - Slice one of the PIE

PIE studies are essential tools for understanding the limits of what we know and don't know about respiratory agents

One of our subscribers commented thoughtfully on the transmission riddle's first post. Norman Pieniazek pointed out that the review we cited indicated the presence of multiple viral agents with multiple possible modes of transmission, is just one of many such studies. 

We never intended that reference to be an exhaustive last word on this topic - we doub…