that presentation (collapsing people)is alarming. I have read some write-ups on what might be going on (essentially the virus attacks the nervous system) but hope we get better documented case data soon out of italy...
Think it takes out the soft targets first, quickly, then the more healthy people stand up to it. Then in some cases, where people had recovered enough to be out in public, they collapse within a matter of seconds. Could be it was designed for a specific class of targets or conversely perhaps its immunity was incorrectly or partially turned off for a class.