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    Prevalence and genotypes of Campylobacter jejuni from urban environmental sources in comparison with clinical isolates from children (2014)

    Art
    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Autoren
    Ramonaitė, S.
    Kudirkiene, E.
    Tamulevičienė, E.
    Leviniene, G.
    Malakauskas, A.
    Gölz, G. (WE 8)
    Alter, T. (WE 8)
    Malakauskas, M.
    Forschungsprojekt
    FBI - ZOO: Untersuchungen zur Tenazität ausgewählter Campylobacter jejuni/coli- und Yersinia enterocolitica-Stämme in Lebensmittelmatrizen (TP 08)
    Quelle
    Journal of Medical Microbiology; 63(9) — S. 1205–1213
    ISSN: 1473-5644
    Sprache
    Englisch
    Verweise
    DOI: 10.1099/jmm.0.072892-0
    Pubmed: 24987101
    Kontakt
    Institut für Lebensmittelsicherheit und -hygiene

    Königsweg 69
    14163 Berlin
    +49 30 838 62550
    lebensmittelhygiene@vetmed.fu-berlin.de

    Abstract / Zusammenfassung

    This study aimed to investigate the prevalence of Campylobacter jejuni in potential contamination sources that are not regularly monitored such as free-living urban pigeons and crows, dogs, cats and urban environmental water and to assess the possible impact on the epidemiology of campylobacteriosis in children using multilocus sequence typing (MLST). Campylobacter spp. were detected in 36.2 % of faecal samples of free-living urban birds and in 40.4 % of environmental water samples. A low prevalence of Campylobacter spp. was detected in dogs and cats, with 7.9 and 9.1 %, respectively. Further identification of isolates revealed that environmental water and pet samples were mostly contaminated by other Campylobacter spp. than C. jejuni, whereas C. jejuni was the most prevalent species in faecal samples of free-living birds (35.4 %). This species was the dominant cause of campylobacteriosis in children (91.5 %). In addition, the diversity of C. jejuni MLST types in free-living birds and children was investigated. Clonal complex (CC) 179 was predominant among free-living urban birds; however, only two isolates from children were assigned to this CC. One dog and one child isolate were assigned to the same clonal complex (CC48) and sequence type (ST) 918. The dominant two clonal complexes among the child clinical isolates (CC353 and CC21) were not detected among C. jejuni strains isolated from environmental sources examined in this study. As only two CCs were shared by environmental and child C. jejuni isolates and a high number of novel alleles and STs were found in C. jejuni isolated from free-living urban birds and environmental water, there is probably only a limited link between urban environmental sources and campylobacteriosis in children, particularly in rather cold climatic conditions.