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A man was admitted to the Johannesburg Hospital with a history of fever, diarrhoea, and dry cough for four days. He began to produce bloodstained sputum and was found to have severe arterial hypoxaemia. Radiography showed widespread opacification over both lung fields, and the clinical and haemodynamic features were consistent with the adult respiratory distress syndrome. Serology for Leptospir...

To investigate the seroprevalence of leptospiral infection in sheep in Ahvaz, southwestern Iran, bloodsamples were taken from 181 female sheep. Sera were stored at -20°C until use. They were initially screenedat serum dilution of 1:100 against six live antigens of Leptospira interrogans serovars pomona, canicola,hardjo, ballum, icterohaemorrhagiae, grippotyphosa using the microscopic agglutinat...

Abstract Leptospirosis is an important zoonotic bacterial disease caused by Leptospira spp. Earlier studies from North Khorasan province (Iran) reported the presence of in wild canines and rodents. To date, there no data on seroprevalence leptospirosis among humans this province. This study was performed to determine prevalence human leptospiral infection people with different occupations. The ...

BACKGROUND Leptospirosis is a re-emerging bacterial zoonosis caused by spirochetes of the genus Leptospira. Severe disease has been reported in dogs in Europe despite vaccination with bivalent Leptospira vaccines. Recently, a tetravalent canine Leptospira vaccine (Nobivac® L4) was licenced in Europe. The goal of this study was to investigate clinical signs, microscopic agglutination test (MAT) ...

To provide information on the chemical structures of antigenic determinants of leptospira, glycolipids of Leptospira interrogans serovar canicola strain Hond Utrecht IV (Ut-IV) and its antigenic variant selected in the presence of a serovar-specific monoclonal antibody were compared physicochemically. Gas-liquid chromatography-mass spectrometry analysis revealed that the glycolipid of Ut-IV con...

The secondary immune response to L. canicola and ICH virus was 90 depressed in Beagle dogs which had inhaled particles of Sr 1-2 days and 7 days before the immune stimulus. The initial body burden was 31-46 microcuries per kilogram. The peak titre was reached for both antigens within eleven days in both control and exposed dogs. This amount of exposure did not accelerate the rate of decline of ...

A total of 400 serum samples collected from patients, clinically suspected of leptospirosis, were evaluated for antibodies by LEPTO dipstick and microscopic agglutination test (MAT). Twenty of these patients (5%) had serological evidence of leptospirosis. Leptospira interrogans serovars Autumnalis and Icterohaemorrhagiae, Canicola and Javanica were serogroups recorded serologically. Fever and j...

Mice experimentally infected with a pathogenic strain of Leptospira interrogans serovar Canicola produced false negative results (prozone effect) in a microscopic agglutination test (MAT). This prozone effect occurred in several serum samples collected at different post-infection times, but it was more prominent in samples collected from seven-42 days post-infection and for 1:50 and 1:100 sampl...