title: A clinical and epidemiological study of "ornithosis" caused by Chlamydia psittaci and Chlamydia pneumoniae (strain TWAR).
abstract: Ornithosis is a notifiable disease in Sweden since 1954. In 1981 and 1982 a sharp increase in the number of notifications occurred. Since then the number has declined but is still high. A changed epidemiology characterized by no history of bird contact and no common source, raised the suspicion of a new agent. Serological data now suggest that the epidemic was to a substantial part due to Chlamydia pneumoniae (strain TWAR) (48% of the patients during 1981-1982 compared to 9% during 1984-1987). During recent years TWAR infections have thus become uncommon but reappearance can be expected in the near future. The clinical picture as well as the complications appear to be very similar in infections caused by C. pneumoniae and C. psittaci.
authors.affiliation: Department of Infectious Diseases, Faculty of Health Sciences, Linköping University, Sweden.
authors.forename: A
authors.initials: A
authors.lastname: Frydén
authors.forename: E
authors.initials: E
authors.lastname: Kihlström
authors.forename: R
authors.initials: R
authors.lastname: Maller
authors.forename: K
authors.initials: K
authors.lastname: Persson
authors.forename: V
authors.initials: V
authors.lastname: Romanus
authors.forename: S
authors.initials: S
authors.lastname: Anséhn
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D000907:Antibodies, Bacterial / Q000276:immunology; D002648:Child; D002690:Chlamydia Infections / Q000188:drug therapy / Q000209:etiology*; D002691:Chlamydophila psittaci / Q000302:isolation & purification; D003168:Complement Fixation Tests; D005260:Female; D006801:Humans; D015994:Incidence; D007407:Interviews as Topic; D008297:Male; D008875:Middle Aged; D009956:Psittacosis / Q000150:complications / Q000188:drug therapy / Q000453:epidemiology*; D012621:Seasons; D011795:Surveys and Questionnaires; D013548:Sweden / Q000453:epidemiology
chemical_list: D000900:Anti-Bacterial Agents; D000907:Antibodies, Bacterial