To cause a human pandemic, the H5N1 avian flu virus would have to ...

[geoffrey]

To cause a human pandemic, the H5N1 avian flu virus would have to
A) spread to primates such as chimpanzees.
B) develop into a virus with a different host range.
C) become capable of human-to-human transmission.
D) arise independently in chickens in North and South America.
E) become much more pathogenic.

[ricki]

Hey dude, go with C. I got it right.

[geoffrey]

Thanks sir, correct as always