swine flu saga not over

The H1N1 virus could mutate and become severe. This is what happen in 1919 with the Spanish Flu. The mexican swine flu saga ain't over. A nightmare scenario would be if the mexican swine flu virus were to swap code with the bird flu that kills 50% of people that get it.

Future medicine might be able to stop a virus before it becomes an epidemic. The sickness cause by regular flu kill about a quarter of a million people each year. Doctors need to have more tools to fight germs.