Leptospirosis is a potentially fatal bacterial disease in dogs with significant welfare and zoonotic implications. Understanding vaccination and risk reduction protects dogs and their owners.
Leptospirosis causes severe acute disease with significant welfare impact through kidney failure, liver damage, and systemic hemorrhage. Affected dogs experience rapid deterioration requiring intensive veterinary care that is itself stressful and costly. Fatality rates in hospitalized cases remain significant despite treatment. The zoonotic dimension means that protecting dogs from leptospirosis simultaneously protects household members from exposure through infected dog urine. Annual vaccination is particularly important for dogs with outdoor lifestyles and wildlife exposure, representing a straightforward welfare investment.