The Psittacosis Outbreak of 1929–1930

act with public health officials. Since the 1960s, veterinarians and physicians have focused their attention on the diagnosis and treatment of Chlamydophila (formerly Chlamydia) psittaci infections. Few remember what is probably the most important event in the recorded history of this disease?the psittacosis outbreak of 1929 1930?and the impact the pandemic had on our un derstanding of this disease and on the bird business.