Lyme disease is the fastest growing vector-borne, infectious disease in the U.S., according to the Centers for Disease Control and Prevention. Here are some other facts and figures about Lyme disease, provided by the CDC. Click through the interactive map above for details on cases by state and comparisons over time.
30,000: The number of cases of Lyme disease reported to CDC by state health departments and D.C. each year. (This doesn't reflect every case of Lyme diagnosed in the U.S. every year, though. Some estimates indicate hundreds of thousands of people may contract the condition annually.)
95 percent of confirmed Lyme disease cases were reported from just 14 states in 2015, including Connecticut, New York and New Jersey, where infected ticks are common.
Lyme disease was the 6th most common Nationally Notifiable disease in 2015, and the most commonly reported vectorborne illness in the U.S.
The number of Lyme cases reported annually in the U.S. has increased nearly 25x since national surveillance began in 1982.
34: The number of new Lyme disease cases in the U.S. each hour, according to a CDC estimate.
822: The number of new Lyme disease cases in the U.S. each day, according to a CDC estimate.
5,770: The number of new Lyme disease cases in the U.S. each week, according to a CDC estimate.
25,000: The number of new Lyme disease cases in the U.S. each month, according to a CDC estimate.
40 percent of Lyme patients end up with long-term health problems, according to the International Lyme and Associated Diseases Society. The average patient sees 5 doctors over nearly 2 years before being diagnosed.
Short treatment courses have resulted in upwards of a 40 percent relapse rate, especially if treatment is delayed.
Local
Fewer than 50 percent of patients with Lyme disease recall a tick bite.
Fewer than 50 percent of patients with Lyme disease recall any rash.
Up to 50 percent of ticks in Lyme-endemic areas are infected.
2,541: The number of reported cases of Lyme disease in Connecticut in 2015, the most recent year of surveillance data published on CDC.gov.
4,314: The number of reported cases of Lyme disease in New York in 2015, the most recent year of surveillance data published on CDC.gov.
4,855: The number of reported cases of Lyme disease in New Jersey in 2015, the most recent year of surveillance data published on CDC.gov.
62 percent: The percentage by which reported Lyme cases jumped from June (5,854) to July (9,522) in 2015, the largest spike of the year.
