title: Campylobacter concisus pseudo-outbreak caused by improved culture conditions.
abstract: An unusual increase in the number of Campylobacter concisus isolates found in stool cultures provoked an outbreak investigation at Bern University Hospital. No epidemiological links were found between the cases, and the Campylobacter isolates were clonally unrelated. A change in culture conditions to a hydrogen-rich atmosphere enhancing growth of C. concisus was deemed responsible for this pseudo-outbreak.
authors.affiliation: Clinical Microbiology, Institute for Infectious Diseases, Bern, Switzerland carlo.casanova@ifik.unibe.ch.
authors.forename: Carlo
authors.initials: C
authors.lastname: Casanova
authors.affiliation: Department of Infectious Diseases, Bern University Hospital, Bern, Switzerland.
authors.forename: Alexander
authors.initials: A
authors.lastname: Schweiger
authors.affiliation: Clinical Microbiology, Institute for Infectious Diseases, Bern, Switzerland.
authors.forename: Niklaus
authors.initials: N
authors.lastname: von Steiger
authors.affiliation: Clinical Microbiology, Institute for Infectious Diseases, Bern, Switzerland.
authors.forename: Sara
authors.initials: S
authors.lastname: Droz
authors.affiliation: Department of Infectious Diseases, Bern University Hospital, Bern, Switzerland.
authors.forename: Jonas
authors.initials: J
authors.lastname: Marschall
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001431:Bacteriological Techniques / Q000379:methods*; D002167:Campylobacter / Q000302:isolation & purification*; D002169:Campylobacter Infections / Q000453:epidemiology* / Q000382:microbiology*; D002648:Child; D002675:Child, Preschool; D016000:Cluster Analysis; D005243:Feces / Q000382:microbiology*; D005260:Female; D006785:Hospitals, University; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D017720:Molecular Epidemiology; D058889:Molecular Typing; D013557:Switzerland / Q000453:epidemiology; D055815:Young Adult