The CDC said in a recent report that data suggests a geographic expansion of Lyme disease.

A new report by the Centers for Disease Control and Prevention (CDC) sheds light on the expanding distribution of Lyme disease cases in the U.S.
"During 2008–2015, a total of 275,589 cases of Lyme disease were reported to CDC (208,834 confirmed and 66,755 probable)," it states. "Although most cases continue to be reported from states with high incidence in the Northeast, mid-Atlantic, and upper Midwest regions, case counts in most of these states have remained stable or decreased during the reporting period. In contrast, case counts have increased in states that neighbor those with high incidence." 
According to the CDC, the data suggests an expansion in the geographic distribution of the disease.
"As Lyme disease emerges in neighboring states [Illinois, Indiana, Iowa, Kentucky, Michigan, North Carolina, North Dakota, Ohio, South Dakota, Tennessee, and West Virginia], clinical suspicion of Lyme disease in a patient should be based on local experience rather than incidence cutoffs used for surveillance purposes," the report says, in light of the trend. "A diagnosis of Lyme disease should be considered in patients with compatible clinical signs and a history of potential exposure to infected ticks, not only in states with high incidence but also in areas where Lyme disease is known to be emerging."
Lyme disease is a tick-borne infection, and typical symptoms after a bite from an infected tick include fever, chills, fatigue and muscle aches. Some also experience a rash or Bell's palsy, according to LymeDisease.org.
The CDC notes patients treated early with antibiotics generally experience a full recovery.