[Survey of anti-Leptospira agglutinins in workers from the city of Londrina-Paraná, Brazil].

Serum samples were obtained from 249 individuals in Londrina-Paraná, Brazil. The sera were analysed for leptospiral agglutinins by microscopic agglutination tests and 22.1% were positive. Of these positives per group were 24.6% for butchers, 25.9% for farm workers, 17.2% for children and 22.2% for servants. The agglutinin titers ranged from 1:200 to 1:3200. The highest titers were obtained for the serovars sejroe (butchers), grippotyphosa (farm workers), javanica, canicola, panama, wolffi and pyrogenes (children) and butembo (servants).