dottore_pesta
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No sign bird flu becoming more infectious -expert 06 Apr 2006 16:28:00 GMT, By David Brough http://www.alertnet.org/thenews/newsdesk/L0649738.htm CAMBRIDGE, England, April 6 (Reuters) - A leading bird flu expert said on Thursday there was no evidence that the virus was showing any signs of mutating into a form that would be more infectious in humans. But Ian Brown, head of avian influenza at Britain's Veterinary Laboratories Agency, an official lab that tests for the virus, also said that it was extremely difficult to track bird flu as it mutated.