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Occurrence of Campylobacter jejuni in Gulls Feeding on Zagreb Rubbish Tip, Croatia; Their Diversity and Antimicrobial Susceptibility in Perspective with Human and Broiler Isolates

Authors
  • Jurinović, Luka1
  • Duvnjak, Sanja
  • Kompes, Gordan
  • Šoprek, Silvija
  • Šimpraga, Borka1
  • Krstulović, Fani1
  • Mikulić, Marina2
  • Humski, Andrea2
  • 1 (F.K.)
  • 2 (A.H.)
Type
Published Article
Journal
Pathogens
Publisher
MDPI
Publication Date
Aug 24, 2020
Volume
9
Issue
9
Identifiers
DOI: 10.3390/pathogens9090695
PMID: 32847120
PMCID: PMC7559842
Source
PubMed Central
Keywords
License
Green

Abstract

Campylobacteriosis is the most common gastrointestinal bacterial disease in the European Union (EU). Wild birds are one of the natural reservoirs of these pathogens. In this study we tested cloacal swabs of 643 gulls captured on rubbish tip in Zagreb, Croatia for the presence of Campylobacter spp. and found 168 Campylobacter positive samples. We used multilocus sequence typing (MLST) to genotype 62 random C. jejuni isolates from gulls, 24 isolates from broiler caeca, 27 isolates from broiler neck skins and 23 human isolates. Altogether, we identified 44 different STs, from which 19 were newly described. Most of the new STs (14) originate from gulls. Although humans and broilers share the majority of STs and isolates from gulls are separated from these, there was one ST present in all three hosts: 45. Additionally antimicrobial susceptibility to six antimicrobials was performed on 123 C. jejuni strains isolated from broiler caeca ( n = 22), neck skins of broilers ( n = 20), gulls cloacal swabs ( n = 50) and human faeces ( n = 31) by the broth microdilution method. Results show lower resistance of gull isolates to NAL and CIP, while resistance to TET was as high as in human and broiler isolates.

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