Outbreak of leptospirosis among triathlon participants and community residents in Springfield, Illinois, 1998.

Journal Article (Journal Article)

We investigated an outbreak of leptospirosis among athletes and community residents after a triathlon was held in Springfield, Illinois. A telephone survey was conducted to collect clinical information and data on possible risk factors, community surveillance was established, and animal specimens and lake water samples were collected to determine the source of the leptospiral contamination. A total of 834 of 876 triathletes were contacted; 98 (12%) reported being ill. Serum samples obtained from 474 athletes were tested; 52 of these samples (11%) tested positive for leptospirosis. Fourteen (6%) of 248 symptomatic community residents tested positive for leptospirosis. Heavy rains that preceded the triathlon are likely to have increased leptospiral contamination of Lake Springfield. Among athletes, ingestion of 1 or more swallows of lake water was a predominant risk factor for illness. This is the largest outbreak of leptospirosis that has been reported in the United States. Health care providers and occupational and recreational users of bodies of freshwater in the United States should be aware of the risk of contracting leptospirosis, particularly after heavy rains.

Full Text

Duke Authors

Cited Authors

  • Morgan, J; Bornstein, SL; Karpati, AM; Bruce, M; Bolin, CA; Austin, CC; Woods, CW; Lingappa, J; Langkop, C; Davis, B; Graham, DR; Proctor, M; Ashford, DA; Bajani, M; Bragg, SL; Shutt, K; Perkins, BA; Tappero, JW; Leptospirosis Working Group,

Published Date

  • June 15, 2002

Published In

Volume / Issue

  • 34 / 12

Start / End Page

  • 1593 - 1599

PubMed ID

  • 12032894

Electronic International Standard Serial Number (EISSN)

  • 1537-6591

Digital Object Identifier (DOI)

  • 10.1086/340615


  • eng

Conference Location

  • United States