A Boston baby is hospitalized with seizures and brain damage after a tick bite on Martha's Vineyard may have led to Powassan ...

Parents of five-week-old Lily Sisco say their daughter is a “fighter” as they struggle with the potential long-lasting ...

Tiffany Sisco, who declined to be interviewed by ABC News, told Boston ABC station WCVB that she found a tick on her ...

While rare, the rate of the Powassan virus is increasing and can cause severe disease, including inflammation of the brain ...