ISSN 2398-2977      

Leptospira interrogans

pequis
Contributor(s):

Richard Walker


Introduction

Classification

Taxonomy

  • Order:Spirochaetales.
  • Family:Leptospiraceae.
  • Genus:Leptospira.
  • Species:Leptospira interrogans.
  • More than 210 serovars.

Etymology

  • Gr:spira- a coil;chaete- a hair.

Active Forms

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Clinical Effects

Epidemiology

Habitat

  • Survive in contaminated water.
  • Areas of high rainfall and poor drainage harbor infections.

Lifecycle

  • Long generation time (12 h).

Transmission

  • Reservoir hosts include rodents.
  • Reservoir hosts become infected with host-adapted serovars.
  • Leptospiraspp are found in the mammalian kidney and excreted in the urine. The reservoir host shows no or only mild clinical signs.
  • Direct or indirect - contact with mucous membranes or damaged skin.
  • Indirect - depends on wet conditions.

Pathological effects

In horses

Control

Control via chemotherapies

Control via environment

  • Prevent contact with urine-contaminated water, especially near rodent habitats.

Vaccination

  • Killed vaccines are used in cattle, swine and dogs for some serovars.
  • There are no approved vaccines for horses.

Diagnosis

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Frellstedt L & Slovis N M (2009) Acute renal disease from Leptospira interrogans in three yearlings from the same farm. Equine Vet Educ 21 (9), 478-484.
  • Odontsetsed N et al (2005) Serological prevalence of Leptospira interrogans serovar Bratislava in horses in Mongolia. Vet Rec 157 (17), 518-519 PubMed.
  • Hogan P M et al (1996) Acute renal disease due to Leptospira interrogans in a weanling. Equine Vet J 28 (4), 331-333 PubMed.
  • Kinde H et al (1996) Leptospiral abortion in horses following a flooding incident. Equine Vet J 28 (4), 327-330 PubMed.
  • Dwyer A E et al (1995) Association of leptospiral seroreactivity and breed with uveitis and blindness in horses - 372 cases (1986-1993). JAVMA 207 (10), 1327-1331 PubMed.
  • Donahue J M et al (1995) Prevalence and serovars of leptospira involved in equine abortions in central Kentucky during the 1991-1993 foaling seasons. J Vet Diagn Invest (1), 87-91 PubMed.
  • Lees V W et al (1994) Titers to Leptospira species in horses in Alberta. Can Vet J 35 (10), 636-640 PubMed.
  • Wood J L (1994) How important are leptospiral infections as a cause of equine disease? Equine Vet J 26 (2), 88 PubMed.
  • Williams D M et al (1994) Serologic and microbiologic findings on 3 farms with equine leptospiral abortions. Equine Vet J 26 (2), 105-108.
  • Bernard W V (1993) Leptospirosis. Vet Clin North Am Equine Pract (2), 435-444 PubMed.
  • Bernard W V et al (1993) Hematuria and leptospiruria in a foal. JAVMA 203 (2), 276-278 PubMed.
  • Philpott M (1993) The dangers of disease transmission by artificial insemination and embryo transfer. Br Vet J 149 (4), 339-369 PubMed.
  • Poonacha K B et al (1993) Leptospirosis in equine fetuses, stillborn foals, and placentas. Vet Pathol 30 (4), 362-369 PubMed.
  • Bernard W V et al (1993) Leptospiral abortion and leptospiruria in horses from the same farm. JAVMA 202 (8), 1285-1286 PubMed.
  • Donaghue J M et al (1992) Prevalence and serovars of leptospira involved in equine abortions in central Kentucky during the 1990 foaling season. J Vet Diagn Invest (3), 279-284 PubMed.
  • Hodgin E C et al (1989) Leptospira abortion in horses. J Vet Diagn Invest (4), 283-287 PubMed.

Can’t find what you’re looking for?

We have an ever growing content library on Vetlexicon so if you ever find we haven't covered something that you need please fill in the form below and let us know!

 
 
 
 

To show you are not a Bot please can you enter the number showing adjacent to this field

 Security code