LONDON - A fourth swan in southern England has tested positive for the deadly H5N1 strain of bird flu, DEFA said on Wednesday.
A spokeswoman said, however, there was currently no evidence of widespread disease in wild or domestic birds.
LONDON - A fourth swan in southern England has tested positive for the deadly H5N1 strain of bird flu, DEFA said on Wednesday.
A spokeswoman said, however, there was currently no evidence of widespread disease in wild or domestic birds.
