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PubMed1992

Antigens involved in the human antibody response to natural infections with Leptospira interrogans serovar copenhageni.

Serum samples from patients with leptospirosis were screened by the microscopic agglutination test (MAT), ELISA and by immunoblotting. The latter two tests were performed with L. interrogans serovar copenhageni isolated from human blood culture. Immunoblotting with patients' sera revealed antibodies recognizing several leptospiral components in the molecular weight range 14.5-105 kDa of both IgM and IgG response. All patients' serum samples presented IgM antibodies reacting with a diffuse band of mol. wt of 14.8-22 kDa proteinase-K resistant and most reacted with bands of 26.5-28.7, 38-39 and 43-43.5 kDa. The IgG response appeared to be at variance. Examination of sequential serum samples obtained over a 4-8-month period revealed little change in the profile of antigen recognized after the 40th day of infection. Sera from healthy individuals presented IgM antibodies reacting with several leptospiral antigens, but lacked response against those of diffuse band of 14.8-22 kDa.

Agglutination Tests↗
PubMed2004

[Estimation of transmission hazard of Leptospira Sp. infections in 2 groups of people].

The aim of the study was to determine the possible risk of the leptospiral transmission from animals to humans. 457 humans (both men and women) were divided into 2 groups: 1) of possible high risk infection consisted of people dealing as farm workers with cattle and pigs 2) of possible low risk infection consisted of people selected randomly. The animals on the farms were previously tested and found positive. All sera were examined using micro-agglutination test (MAT) with a battery of 18 serovars. The statistical evaluation of the results was performed using chi 2 test. The infection rate in I group was 13.79% and in II group was 1.5%. (p < or = 0.001). Sera of I group reacted with 7 serovars (sejroe, bratislava, canicola, tarassovi, bataviae, celledoni, patoc) and of II with 3 (hebdomadis, sejroe, hardjo). The infection rate in the group I was over 9 times higher than in group II. Thus dealing with infected animals is a high risk factor.

Agglutination Tests↗
PubMed1949

[Leptospira].

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Bacteria↗