'Worrisome' mutations found in H5N1 bird flu virus isolated from Canadian teenager
Genetic analysis of H5N1 bird flu virus that infected a Canadian teenager shows 'worrisome' mutations, new studies reveal.
Up to 5 house cats sick as bird flu found in 2nd raw pet food brand: health officials
Another brand of raw pet food has been found to contain bird flu and has made at least five house cats presumably sick with the virus, health officials say.