Leptospirosis is a rare bacterial infection that can be serious. The infection is caused by the bacterium called Leptospira.
Leptospirosis is most common in warm, tropical conditions. It also spreads easily. With prompt and proper treatment, prognosis is usually good. If untreated, complications may develop that can potentially be fatal.
Leptospirosis is caused by contact with fresh water, wet or dampened soil, or vegetation that has been soiled by urine from an infected animal.
When contact is made with the contaminated material, the bacteria enter the body through open sores or wounds in the skin, or through mucous membranes. When the bacterium has entered the body, it flows into the bloodstream and throughout the body, causing infection.
The following people are at an increased risk of developing leptospirosis:
Symptoms typically appear about 10 days after infection and may include one or more of the following:
Your doctor will ask about your symptoms and medical history. A physical exam will be done.
Your bodily fluids may be tested. This can be done with:
Talk with your doctor about the best treatment plan for you. Treatment options include antibiotics, such as:
To help reduce your chances of getting leptospirosis, take the following steps:
Centers for Disease Control and Prevention
World Health Organization
Ellis T, Imrie A, et al. Underrecognition of leptospirosis during a dengue fever outbreak in Hawaii, 2001-2002. Vector Borne Zoonotic Dis. 2008;8(4):541-547.
Hartskeerl RA, Collares-Pereira M, et al. Emergence, control and re-emerging leptospirosis: dynamics of infection in the changing world. Clin Microbiol Infect. 2011;17(4):494-501.
Katz AR, Buchholz AE, et al. Leptospirosis in Hawaii, USA, 1999-2008. Emerg Infect Dis. 2011;17(2):221-226.
Leptospirosis. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/leptospirosis. Updated June 24, 2013. Accessed August 5, 2013.
Leptospirosis (Weil's disease). New York State Department of Health website. Available at: http://www.health.ny.gov/diseases/communicable/leptospirosis/fact_sheet.htm. Updated October 2011. Accessed August 5, 2013.
Stern EJ, Galloway R, et al. Outbreak of leptospirosis among Adventure Race participants in Florida, 2005. Clin Infect Dis. 2010;50(6):843-849.
Last reviewed August 2013 by Lawrence Frisch, MD, MPH; Michael Woods, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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