This morning at 07:39hrs, Station 18 and New Castle County Paramedics were dispatched to the intersection of West 7th Street and Larkin Street for an MVC with Entrapment. Squad 18 and Ambulance B-18 responded. While responding, units were advised a vehicle had struck a tractor trailer head on. One patient was transported to an area hospital with serious injuries by Ambulance B-18 and Paramedics. Fire Police directed traffic around the area while New Castle City Police Department investigated.