Actually what the data says is the older you get the more deadly it is and below certain ages it's less than 2. There are actually 5 episodes on "this week in

Actually what the data says is the older you get the more deadly it is and below certain ages it's less than 2. There are actually 5 episodes on "this week in virology". These people are virology professors in the US. This episode an interesting look at the percentages. http://www.microbe.tv/twiv/twiv-588/ http://www.microbe.tv/twiv/twiv-588/ EDIT: two other interesting aspects, over 80% of the cases were mild and over 50% of chinese males smoke.