The detection of bird flu in a sheep is another sign that the H5N1 virus is adapting to hop to new hosts

By Nigel Hunt LONDON (Reuters) -Bird flu has been detected in a sheep in northern England, the first known case of its kind in the world, Britain's government said, adding to the growing list of mammals infected by the disease and fuelling fears of a pandemic.

H5N1 influenza is evolving rapidly, weakening the effectiveness of existing antibodies and increasing its potential threat to humans. Scientists at UNC Charlotte and MIT used high-performance computational modeling to analyze thousands of viral protein-antibody interactions,