Psittacosis (Ornithosis) Chlamydia psittaci:gram-negative intracellular bacterium Transmitted by elementary bodies from bird dropping to humans Reorganizes into reticulate body after being phagocytized Diagnosis:culturing bacteria in eggs or cell culture Treatment:Tetracycline • Chlamydia psittaci: gram-negative intracellular bacterium • Transmitted by elementary bodies from bird dropping to humans • Reorganizes into reticulate body after being phagocytized • Diagnosis: culturing bacteria in eggs or cell culture • Treatment: Tetracycline Psittacosis (Ornithosis)