| serological prevalence to six leptospiral serovars in cattle in asturias (northern spain). | the prevalence of antibody to six serovars of leptospira interrogans in cattle in asturias (northern spain) was determined by the microscopic agglutination test (mat). using 50% agglutination or lysis at a dilution of 1:10 or more as the criteria for seropositivity, 371 of 3578 (10.36%) animals were found to react with one serovar. the most commonly detected serovars were pomona (5.59%) and grippotyphosa (2.37%), whilst serovar hardjo (0.75%), icterohaemorrhagiae (0.64%), poi (0.64%) and autumna ... | 2000 | 10982084 |