Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 24, Number 12—December 2018
Research Letter

Locally Acquired Leptospirosis in Expedition Racer, Manitoba, Canada

Sameer S. KassimComments to Author , Antonia Dibernardo, L. Robbin Lindsay, and Terence C. Wuerz
Author affiliations: University of Manitoba, Winnipeg, Manitoba, Canada (S.S. Kassim, T.C. Wuerz); Public Health Agency of Canada, Winnipeg (A. Dibernardo, L.R. Lindsay); St. Boniface General Hospital, Winnipeg (T.C. Wuerz)

Main Article


Confirmed and suspected cases of leptospirosis, Canada, 2009–2017*

Region and province
No. supportive cases†
No. confirmed cases‡
No. cases/region
Western, including the Prairies
British Columbia 5 6 20
Alberta 2 4
Saskatchewan 0 0
Manitoba 3 0
Ontario 9 9 37
Quebec 6 13
New Brunswick 0 3 4
Nova Scotia 0 1
Prince Edward Island 0 0
Newfoundland and Labrador 0 0
Overall 25 36 61

*As per Centers for Disease Control and Prevention 2013 case definition (7).
Leptospira agglutination titer >1:200 but <1:800 by microscopic agglutination test for >1 serum specimens.
>4-fold increase in Leptospira agglutination titer between acute-phase and convalescent-phase serum samples or Leptospira agglutination titer >1:800 by microscopic agglutination test for >1 specimens.

Main Article

  1. Adler  B, de la Peña Moctezuma  A. Leptospira and leptospirosis. Vet Microbiol. 2010;140:28796. DOIPubMedGoogle Scholar
  2. Haake  DA, Levett  PN. Leptospira species (leptospirosis). In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett’s principles and practice of infectious diseases, 8th ed. Philadelphia: Elsevier Saunders; 2015. p. 2714–20.
  3. Gundacker  ND, Rolfe  RJ, Rodriguez  JM. Infections associated with adventure travel: A systematic review. Travel Med Infect Dis. 2017;16:310. DOIPubMedGoogle Scholar
  4. Teichmann  D, Göbels  K, Simon  J, Grobusch  MP, Suttorp  N. A severe case of leptospirosis acquired during an iron man contest. Eur J Clin Microbiol Infect Dis. 2001;20:1378. DOIPubMedGoogle Scholar
  5. Centers for Disease Control and Prevention (CDC). Update: leptospirosis and unexplained acute febrile illness among athletes participating in triathlons—Illinois and Wisconsin, 1998. MMWR Morb Mortal Wkly Rep. 1998;47:6736.PubMedGoogle Scholar
  6. Traxler  RM, Callinan  LS, Holman  RC, Steiner  C, Guerra  MA. Leptospirosis-associated hospitalizations, United States, 1998-2009. Emerg Infect Dis. 2014;20:12739. DOIPubMedGoogle Scholar
  7. Centers for Disease Control and Prevention. Leptospirosis (Leptospira interrogans): case definition, 2013 [cited 2018 Jun 10].
  8. Shearer  KE, Harte  MJ, Ojkic  D, Delay  J, Campbell  D. Detection of Leptospira spp. in wildlife reservoir hosts in Ontario through comparison of immunohistochemical and polymerase chain reaction genotyping methods. Can Vet J. 2014;55:2408.PubMedGoogle Scholar
  9. Jardine  C, Lindsay  LR, Nicholson  VM, Ojkic  D, Prescott  JF. Longitudinal study on the seroprevalence of avian influenza, leptospirosis, and tularemia in an urban population of raccoons (Procyon lotor) in Ontario, Canada. Vector Borne Zoonotic Dis. 2011;11:3742. DOIPubMedGoogle Scholar
  10. Messier  V, Lévesque  B, Proulx  JF, Rochette  L, Serhir  B, Couillard  M, et al. Seroprevalence of seven zoonotic infections in Nunavik, Quebec (Canada). Zoonoses Public Health. 2012;59:10717. DOIPubMedGoogle Scholar

Main Article

Page created: November 20, 2018
Page updated: November 20, 2018
Page reviewed: November 20, 2018
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.