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Risk Factors for Lyme Disease

A risk factor is something that increases your likelihood of getting a disease or condition.

It is possible to develop Lyme disease with or without the risk factors listed below. However, the more risk factors you have, the greater your likelihood of developing Lyme disease. If you have a number of risk factors, ask your doctor what you can do to reduce your risk.

Anyone who lives in an area where there are ticks has a risk of being bitten by a Lyme disease-infected tick. An increased risk is usually directly related to the amount of time a person spends outdoors in areas where there are a lot of ticks.

Geographic Location

Lyme disease is found most often in 3 geographic locations in the United States:

  • Northeast and Mid-Atlantic—Maine to Maryland
  • North Central—Minnesota and Wisconsin
  • Pacific Northwest—northwestern California and Oregon

Time of Year

Ticks are most active during the warmer months of the year. Peak at-risk times vary from region to region, based on the temperature.

  • Northeast, Mid-Atlantic, and North Central US—Increased risk is between April and November, with the peak occurring in July.
  • Southern US—Ticks are active year-round.
  • Other areas can be variable, based on the temperature.

Activities

People who work outdoors in jobs such as surveying, landscaping, forestry, gardening, and utility service have a higher risk of Lyme disease. Participating in outdoor recreational activities such as hiking, camping, hunting, and gardening can also increase your risk.

Landscape

The ticks that carry Lyme disease are more likely to live in wet, green, brushy, or wooded areas. They are less likely to be near pruned, well-cared-for plants, but more likely near unmaintained shrubby or brushy plants. Living near or visiting wooded or brushy areas can increase your risk.

Age

Lyme disease occurs more often in children under age 15, and adults between 25-44 years old. This is most likely due to outdoor activities that expose them to ticks.

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References:

A history of Lyme disease, symptoms, diagnosis, treatment, and prevention. National Institute of Allergy and Infectious Diseases website. Available at:
...(Click grey area to select URL)
Updated March 29, 2011. Accessed September 26, 2012.
About Lyme disease. Lyme Disease website. Available at: https://www.lymedisease.org/lyme-basics/lyme-disease/about-lyme. Accessed September 26, 2012.
Lyme disease. EBSCO DynaMed Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T114365/Lyme-disease. Updated August 15, 2016. Accessed October 6, 2016.
Transmission. Centers for Disease Control and Prevention website. Available at:
...(Click grey area to select URL)
Updated July 26, 2012. Accessed September 26, 2012.
Last reviewed November 2015 by David L. Horn, MD
Last Updated: 12/20/2014

 

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