- Single bird flu mutation could let it latch easily to human cells, study finds The Washington Post
- A single gene mutation could enable H5N1 to spread between people, study finds Livescience.com
- H5N1 bird flu is closer to gaining pandemic potential than we thought New Scientist
- Bird Flu Is Becoming a Bigger Threat TIME
- Just one mutation can make H5N1 bird flu a threat to humans, California researchers say Los Angeles Times