[Antibodies to Klebsiella O-antigens in patients with seronegative spondyloarthropaties].

Objectives: The pathogenesis of seronegative spondyloarthropathies is still unknown. A microbial etiology has been suggested. The aim of the study was to analyze the antibodies against Klebsiella O-antigens in serum of patients with seronegative spondyloarthropathies.