A mom says her infant daughter may be the patient that health officials said is under investigation for having a rare Powassan virus infection.

A Boston baby is hospitalized with seizures and brain damage after a tick bite on Martha's Vineyard may have led to Powassan virus, which transmits faster than Lyme disease.

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