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An illness characterized by fever, chills, headache, photophobia, lower or upper respiratory disease, and myalgia
Probable: a clinically compatible illness that is epidemiologically linked to a confirmed case, or with supportive serology (i.e., a psittacosis CF titer of greater than or equal to 32 in one or more serum specimens obtained after onset of symptoms)
Confirmed: a clinically compatible illness that is laboratory confirmed
The serologic findings noted above may also occur as a result of infection with Chlamydia trachomatis or Chlamydia pneumoniae.
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