answersLogoWhite

0


Best Answer

Both of the two strains known to infect humans, H5N1 and H7N9 are very strong. H5N1 kills approximately 50 - 60% of humans infected. The mortality rate of H7N9 is unknown since it was only first discovered in humans at Easter time in 2013.

User Avatar

Wiki User

11y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What strand of avian influenza is strong?
Write your answer...
Submit
Still have questions?
magnify glass
imp