Avian flu outbreak detected among swans in Swansea and Massachusetts.

Avian flu, also known as bird flu, has been identified as the cause of death for a cluster of swans in Swansea, Massachusetts. The virus is highly contagious among birds but is not commonly seen in humans. The town is advising residents to avoid contact with wild birds and to take care not to expose their domestic flocks to the virus. The U.S. Department of Agriculture has reported cases of HPAI in wild birds in several other counties in Massachusetts this year.