![]() This rash is circular, red and can resemble a bulls-eye target site. ![]() Within 3 to 30 days, the characteristic erythema migrans rash may appear. If a patient is unsure as to how long the tick was attached before it was extricated, he or she must be vigilant for the onset of symptoms. In order to transmit Lyme disease, an infected tick must remain attached to a host for a period of at least 36 to 48 hours. The Centers for Disease Control and Prevention (CDC) estimates that roughly 300,000 cases of Lyme disease are diagnosed in the United States each year. In the Pacific region, Lyme disease is transmitted by the western blacklegged tick. A significant number of cases have also been diagnosed along the Pacific coast in northern California, Oregon and Washington. Although the illness has been reported in all 50 states, 95 percent of all cases are concentrated within the northeast and Midwestern states. Since that time, the geographic range of Lyme disease has expanded. Lyme disease was first identified in Lyme, Connecticut in 1982, where it was determined to be transmitted by the blacklegged tick, which is also known as the deer tick. The good news is that early treatment with an extended period of antibiotic therapy cures most Lyme disease cases, making diagnosis a critical first step toward recovery. Lyme disease is a tick-borne disease that can have debilitating effects on the joints, nervous system and heart if the infection is not diagnosed and treated. According to the Lyme Action Network, Lyme disease is the most common vector-borne disease and the second most common infectious disease in the United States.
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