Leptospirosis: Challenges ahead

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Presented by Richard Ford, DVM, MSc, Dipl. ACVIM, Dipl. ACVPM (Hons)

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CE credit: 0.5

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Questions

1. Globally, 60,000 people die from leptospirosis each year. Which of the following has a similar estimated mortality rate in humans? *

Seasonal flu

Toxoplasmosis

Rabies

Lyme borreliosis

2. Recent Leptospira vaccination can cause false positive test results on each of the leptospirosis diagnostic testing platforms except: *

when testing for IgG antibody.

when using a Microscopic Agglutination Test (MAT).

when using a Polymerase Chain Reaction (PCR) on blood.

when testing for IgM antibody.

3. When testing a patient for leptospirosis using PCR (polymerase chain reaction) testing technology: *

2 blood samples must be submitted 1 to 2 weeks apart.

both blood and urine samples should be submitted simultaneously.

results are most reliable in the unvaccinated dog.

concurrent antibiotic therapy is unlikely to interfere with the results.

4. Which one of the following Leptospira serovars diagnosed in dogs in Canada is not available in the 4-serovar Leptospira vaccine? *

L. icterohaemorrhagiae

L. bratislava

L. pomona

L. grippotyphosa

5. An adult dog that is overdue for a Leptospira booster: *

has sustained immune “memory” that is likely to last for at least 3 to 5 years.

is at risk of becoming a reservoir (chronic carrier) host.

should receive 2 doses, 3-4 weeks apart, if more than 15 months since the last dose.

should be tested for the presence of IgG antibody to determine whether or not re- vaccination is necessary.

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