Sigel area resident Jennifer Walter has been injured in a traffic collision,, in northwestern Jeffferson County.     But, there is no word that she needed hosptial treatment.     Walter had been operating an s-u-v on Route 36, at the intersection with  Bottom Road, in Eldred Township.     Meanwhile, Melouis Dormeus of Denver (PA) had been driving a car the opposite direction on Route 36.     To avoid a rear end collision with a stopped vehicle ahead, Dormeus swerved his vehicle across the centerline of Route 36 and instead hit the Walter s-u-v.