Comparison of anti-Leptospira antibodies by microscopic agglutination test in ruminants and equines of Urmia, Iran.

reported an increasing trend in leptospira infection with age in cattle. 34 Patel et al . recorded that the highest seroprevalence of leptospira in buffaloes over 4 years of age was 20.00% while between 1 - 4 years of age, it was only 4.60%. 43 Agrawal et al . reported that the frequency of leptospirosis was increased with the age of the animals. 45 The results of studies in the last decades on leptospiral infection in the world show that despite the improvements in health conditions and limited vaccinations in susceptible animals, not in Iran, the seroprevalence of the disease is still growing.

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