title: [A family outbreak of Chlamydia psittaci infection].
abstract: A family outbreak (3 cases) of Chlamydia psittaci infection was reported. The first case, a 56-year-old man was admitted with fever and general fatigue. Chest X-ray film revealed a consolidation in the right lower lung. One month before admission he had purchased 2 parakeets (chick) and one parakeet died. On learning of his history of contact with the chick, psittacosis was suspected. After administration of fixation (CF) antibody titer against chlamydia rose to 1:128 and IgA titer against Chlamydia psittaci by microimmunofluorescence antibody technique (MAF) rose to 1:128 in 21 days after admission. The second case, the wife of the first, a 53-year-old woman had a fever and a cough about two weeks before the admission of the first case. At the time of her husband was admitted, she attended the outpatient department. The chest CT X-ray film showed a ground glass appearance in both lower lung fields. The third case, the daughter of the first, didn't have any signs. Chest X-ray film was normal. But IgM titer against Chlamydia psittaci by MAF rose to 1:16 and IgA titer against Chlamydia psittaci by MAF rose to 1:128. This case was considered as inapparent infection.
authors.affiliation: Department of Respiratory Diseases, Misyuku Hospital, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Miyashita
authors.forename: Y
authors.initials: Y
authors.lastname: Nakamori
mesh_terms: D000328:Adult; D000907:Antibodies, Bacterial / Q000032:analysis; D002691:Chlamydophila psittaci / Q000276:immunology*; D005192:Family Health; D005260:Female; D005455:Fluorescent Antibody Technique; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis; D008297:Male; D008875:Middle Aged; D009956:Psittacosis / Q000175:diagnosis / Q000635:transmission*
chemical_list: D000907:Antibodies, Bacterial; D007070:Immunoglobulin A