Three recent animal studies suggest new ways of enhancing the immune system's ability to resist influenza.

H5N1 viruses have the potential to become transmissible through the air between mammals, according to a controversial study published June 21 by Science.

As the journal Science prepares to publish a controversial study on a mutated strain of the H5N1 “bird flu” virus, worldwide preparedness for a viral pandemic is “better than it’s ever been,” according to David Cohn, MD.

Nature has published one study on a genetically enhanced H5N1 virus that can be transmitted between ferrets, and Science is planning to publish a similar study soon.