The first case of leptospirosis in the Zadar area.

In September 1999, a 56-year-old butcher was admitted to the General Hospital in Zadar because of fever, headache, severe pain in the calf muscles and thighs, conjunctivitis, rash, hepatomegaly and jaundice. The initial diagnosis was septic shock, and the patient was admitted to the internal medicine ward. Microscopic agglutination test showed a fourfold rise of antibodies to Leptospira sejroe in the three serum samples. These serologic findings and laboratory findings of leukocytosis, thrombocytopenia, increased serum aminotransferases, blood urea nitrogen and creatinine, proteinuria and leukocyturia indicated that Leptospira sejroe was the etiologic agent of the disease in the patient presented.