NAVLE Urinary

Canine Leptospirosis Study Guide

Leptospirosis is a globally important zoonotic bacterial disease caused by pathogenic spirochetes of the genus Leptospira.

Overview and Clinical Importance

Leptospirosis is a globally important zoonotic bacterial disease caused by pathogenic spirochetes of the genus Leptospira. This disease represents one of the most clinically significant infectious causes of acute kidney injury (AKI) in dogs and is a frequently tested topic on the NAVLE due to its clinical complexity, zoonotic potential, and importance in veterinary public health.

The 2023 ACVIM Consensus Statement updated recommendations to include leptospirosis vaccination as a core vaccine for all dogs, regardless of lifestyle, signaling the increased recognition of this disease's widespread occurrence even in urban and suburban environments.

High-YieldOn the NAVLE, leptospirosis should be your top differential for any dog presenting with acute kidney injury, especially if accompanied by hepatic involvement, fever, and thrombocytopenia. Remember: this disease is ZOONOTIC - always consider public health implications!
Serovar Primary Reservoir In Vaccine? Clinical Notes
Icterohaemorrhagiae Rats Yes Classic severe disease; hepatorenal
Canicola Dogs Yes Dogs are maintenance host
Grippotyphosa Raccoons, voles Yes Most common in US currently
Pomona Pigs, skunks, opossums Yes Livestock exposure risk
Bratislava Pigs, horses, rodents No (N. America) Emerging; in European vaccines

Etiology

The Organism

Leptospira species are thin, tightly coiled, motile spirochetes measuring 0.1 micrometers in diameter and 6-20 micrometers in length. Key morphological features include:

You've been studying hard

Create a free account to keep reading

Free accounts get 5 articles/day + daily practice question

Join 14,000+ vet students already studying with NavleExam.

No credit card needed — free account takes 30 seconds.

Create Free Account — Keep Reading Already have an account? Log in
or skip signup — just get daily questions

No spam. One question per day. Unsubscribe anytime.

NAVLE Exam Prep Platform

Everything you need to pass the NAVLE

10,000+ Practice Questions
Exam-style with full explanations
Past Exam Papers
Real previous exam questions
Flashcard Mode
Species & topic quick review
High-Yield Study Guides
What's actually on the exam
Start Free Trial → See Plans & Pricing No credit card required to start