Gram-positive coccus Kocuria kristinae, a part of the human skin and oral cavity normal microbial flora, is not considered to be a primary pathogenic microorganism, and infections due to this bacterium are very rare. In this report, we describe an unusual case of K. kristinae infection causing synovitis and periarticular bursitis of the left coxofemoral joint in a seven-year-old boy. Kocuria spp. was isolated from the left hip joint synovial fluid by modern VITEK 2 compact automated system, used with GP identification card and corresponding database. The increasing number of reported correlations of K. kristinae isolates from different biological specimens and existing distinctive infections points to potential pathogenicity and clinical importance of this bacterial species.
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