The Centers for Disease Control and Prevention has estimated that millions of Americans experience traumatic brain injuries each year. In addition, each year around 1.5 million registered hospital admissions are related to traumatic brain injury in European countries. Studies indicate 69 million cases of traumatic brain injury are reported worldwide each year. Recovery from a traumatic brain injury can be lengthy. However, each incident is different and recovery rates and levels of disability after injury vary. A person with traumatic brain injury may need specialized medical attention and therapy. Recovery rates are higher in cases of mild to moderate traumatic injury. TBI further reports recovery statistics in moderate cases are approximately 60 percent, and about 25 percent are left with some disability. Mild injury cases often have good prognoses, but persistent neuropsychological deficits. Severe cases have the worst prognosis, with only around 25 to 30 percent resulting in positive outcomes.