The Baytown Medic unit collided with another vehicle at N. Main and Defee just after 9 a.m. Thursday.
Two EMS trainees riding in the back of the ambulance were transported to the hospital by Life Flight. Their conditions and injuries are not known.
The four people in the other vehicle were taken to the hospital by ambulance.
Both paramedics riding in the front of the ambulance were not hurt.
It's not clear what caused the collision.
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