
Seasonal flu immunity shields against severe bird flu in ferrets
A new study suggests that prior immunity from H1N1 influenza may provide some protection against the severe effects of H5N1 bird flu in humans, based on experiments in ferrets. While this offers hope that a potential H5N1 pandemic might be less deadly, experts caution that the virus's ability to evolve and other factors mean the threat remains significant. Further research is needed to fully understand the mechanisms of cross-protection and the ongoing risk of H5N1.

