Psittacosis, caused by Chlamydophila psittaci, is a well described but sporadically occurring clinical entity, which mainly presents as community-acquired pneumonia. Diagnosis used to be relatively difficult. However, new molecular techniques, such as real-time polymerase chain reaction, increased detection of cases. Furthermore, genotyping of the ompA gene can be used as a tool to trace the possible source of an outbreak or to link a specific bird to a particular patient.
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