Lyme disease is the most commonly reported tick-borne disease in the United States, accounting for more than 95% of all cases of reported tick-borne disease. National statistics on Lyme disease are available from the Centers for Disease Control and Prevention. Between 1981 (when Lyme disease became reportable in the state) and 2005, over 32,000 cases have been reported in New Jersey. During the past 5 years, New Jersey has averaged of over 2,750 cases annually and in 2005, reported 3,363 Lyme disease cases, the highest number ever recorded in the state. Lyme disease is considered endemic in all 21 New Jersey counties.