What was a surprising feature about the deadly nature of the 2009 H1N1 influenza virus?
A)H1N1 affected the elderly.
B)H1N1 affected healthy young people.
C)H1N1 affected birds.
D)H1N1 affected pigs.

Question

Quizplus · Accepted Answer

The 2009 H1N1 influenza virus was surprising in that it predominantly affected healthy young people, rather than the elderly or those with weakened immune systems who are typically more susceptible to severe influenza complications.

What Was a Surprising Feature About the Deadly Nature of the 2009