DefinitionPsittacosis is an infection caused by Chlamydophila psittaci, a type of bacteria found in the droppings of birds. Birds spread the infection to humans.Alternative NamesOrnithosis; Chlamydophila psittaciCauses, incidence, and risk factorsPsittacosis is a rare disease: 100 - 200 cases are reported each year in the United States.Bird owners, pet shop employees, persons who work in poultry processing plants, and veterinarians are at increased risk for this infection. Typical birds involved are parrots, parakeets, and budgerigars, although other birds have also caused the disease.SymptomsBlood-tinged sputumDry coughFatigueFever and chillsHeadacheMuscle achesShortness of breathSigns and testsThe health care provider will hear abnormal lung sounds such as crackles and decreased breath s