Numerous publications pointing the role of Chlamydophila pneumoniae infections in etiopathogenesis of bronchial asthma have appeared in recent years. Up to the presence the diagnostics of Chlamydophila pneumoniae infections has been based on the serological examinations especially on indirect microimmunofluorescence which is regarded to be a "gold standard". The aim of the paper was to compare the occurrence of Chlamydophila pneumoniae infection serological markers in the group of patients with asthma (N = 38) and in the control group (N = 38). The obtained results have allowed making the following conclusions: 1. The increased level of IgG class anti-Chlamydophila pneumoniae antibodies in the group of patients with asthma, which proves more frequent contact with Chlamydophila pneumoniae in that group, seems to support the hypothesis about the role of chlamydial infections in etiopathogenesis of bronchial asthma. 2. The single assessment of anti-Chlamydophila pneumoniae antibodies in the ELISA test has not allowed determining the type of chlamydial infection in unambiguous way. However, with reference to the entire clinical picture, the statement of the contact with Chlamydophila pneumoniae can be helpful especially in the treatment of severe asthma.
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