One thousand, four hundred and twenty-eight sera from stray dogs from the city of S. Paulo were examined using agglutination microscopic testing. Of the total of 1428 sera, 308 (21.6%) showed positive. Seasonal influence was observed in the leptospiral infection of the canine population studied in that the largest number of the reagent sera was verified in the summer (24.2%) and autumn (24.9%). In contrast, spring (18.3%) and winter (18.3%) prevalence levels were lower. These differences were considered significant from […]

Of the 134 feline sera tested by tube agglutination test, 4 (3%) were positive for Brucella canis antibodies, all with titer 100. It was not possible to isolate Brucella canis by blood culture in the case of these animals.