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Mutations that help bird flu virus turn virulent for humans found
Washington, Nov 16 Researchers at the University of Wisconsin-Madison have identified two genetic mutations that appear to be involved in turning a deadly bird flu virus into a contiguous human one.
The H5N1 strain has surface proteins that allow it to easily infect birds, but not humans. However, experts have been afraid it will gain the ability to spread easily among humans, leading to millions of deaths world-wide.
"We identified two changes that are important. Both changes are needed......
