title: First report of an outbreak of pneumonia caused by Streptococcus pneumoniae serotype 6A.
abstract: Five patients in a geropsychiatric unit of a psychiatric hospital became abruptly ill with pneumonia caused by Streptococcus pneumoniae serotype 6A. Four other residents were colonized with the same serotype, which has previously not been reported in association with pneumonia outbreaks. Furthermore, serotype 6A is not included in all vaccine types, which may be important for the choice of vaccine in some settings. All isolates showed identical pulsed-field gel electrophoresis restriction patterns.
authors.affiliation: University Psychiatric Hospital Ljubljana, Studenec 48, 1260, Ljubljana Polje, Slovenia.
authors.forename: Karla
authors.initials: K
authors.lastname: Prebil
authors.affiliation: Department of Infectious Diseases, University Medical Centre Ljubljana, Japljeva 2, 1252, Ljubljana, Slovenia. bojana.beovic@kclj.si.
authors.forename: Bojana
authors.initials: B
authors.lastname: Beović
authors.affiliation: Department for Public Health Microbiology, Centre for Medical Microbiology, National Laboratory of Health, Environment and Food, Grablovičeva 44, 1000, Ljubljana, Slovenia.
authors.forename: Metka
authors.initials: M
authors.lastname: Paragi
authors.affiliation: Faculty of Medicine, Institute of Microbiology and immunology, University of Ljubljana, Zaloška 4, 1000, Ljubljana, Slovenia.
authors.forename: Katja
authors.initials: K
authors.lastname: Seme
authors.affiliation: Department for Public Health Microbiology, Centre for Medical Microbiology, National Laboratory of Health, Environment and Food, Grablovičeva 44, 1000, Ljubljana, Slovenia.
authors.forename: Tamara
authors.initials: T
authors.lastname: Kastrin
authors.affiliation: University Psychiatric Hospital Ljubljana, Studenec 48, 1260, Ljubljana Polje, Slovenia.
authors.forename: Blanka Kores
authors.initials: BK
authors.lastname: Plesničar
authors.affiliation: Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia.
authors.forename: Bojana
authors.initials: B
authors.lastname: Petek
authors.affiliation: Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia.
authors.forename: Žiga
authors.initials: Ž
authors.lastname: Martinčič
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D008297:Male; D011018:Pneumonia, Pneumococcal / Q000175:diagnosis* / Q000453:epidemiology / Q000382:microbiology*; D013296:Streptococcus pneumoniae / Q000145:classification* / Q000302:isolation & purification*
keywords: Geropsychiatry; Pneumonia; disease outbreak; Serotype 6A; Streptococcus pneumoniae