First Data on <i>Campylobacter</i> spp. Presence in Shellfish in Croatia

This study aimed to assess the presence of thermotolerant <i>Campylobacter</i> spp., as one of the most important foodborne zoonotic pathogens, in three shellfish species: mussels (<i>Mytilus galloprovincialis</i>), oysters (<i>Ostrea edulis</i>) and queen scallop...

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Main Authors: Luka Jurinović, Biljana Ječmenica, Natalija Džafić, Diana Brlek Gorski, Borka Šimpraga, Fani Krstulović, Tajana Amšel Zelenika, Andrea Humski
Format: Article
Jezik:English
Izdano: MDPI AG 2022-08-01
Serija:Pathogens
Teme:
Online dostop:https://www.mdpi.com/2076-0817/11/8/943
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author Luka Jurinović
Biljana Ječmenica
Natalija Džafić
Diana Brlek Gorski
Borka Šimpraga
Fani Krstulović
Tajana Amšel Zelenika
Andrea Humski
author_facet Luka Jurinović
Biljana Ječmenica
Natalija Džafić
Diana Brlek Gorski
Borka Šimpraga
Fani Krstulović
Tajana Amšel Zelenika
Andrea Humski
author_sort Luka Jurinović
collection DOAJ
description This study aimed to assess the presence of thermotolerant <i>Campylobacter</i> spp., as one of the most important foodborne zoonotic pathogens, in three shellfish species: mussels (<i>Mytilus galloprovincialis</i>), oysters (<i>Ostrea edulis</i>) and queen scallops (<i>Aequipecten opercularis</i>). The samples were collected from nine locations in the Istrian aquatory, Croatia. Isolation of <i>Campylobacter</i> was done according to standard ISO method, and species were identified using multiplex PCR. Isolates identified as <i>C. jejuni</i> and <i>C. lari</i> were genotyped using multilocus sequence typing (MLST) to determine the potential source of contamination. Among 108 examined samples of bivalve molluscs, mussels dominated and were the only ones found positive for the presence of <i>Campylobacter</i> (25.6%). In total, 19 <i>C. lari</i> and 1 <i>C. jejuni</i> strains were isolated. <i>C. lari</i> isolates found in this study belong to 13 sequence types (STs), and 9 of them are newly described in this paper. Two out of the four previously described <i>C. lari</i> STs that were found in this study were previously found in human stool. The only <i>C. jejuni</i> isolate was found to be sequence type 1268, which belongs to ST-1275 clonal complex that is almost exclusively found in seabirds and can sporadically cause infection in humans. Regarding the obtained results, introducing surveillance of thermotolerant <i>Campylobacter</i> in shellfish in the Republic of Croatia is advised as an improvement for public health safety.
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spelling doaj.art-c9a406332a8948f4aaaeab05491842d92023-11-30T22:09:41ZengMDPI AGPathogens2076-08172022-08-0111894310.3390/pathogens11080943First Data on <i>Campylobacter</i> spp. Presence in Shellfish in CroatiaLuka Jurinović0Biljana Ječmenica1Natalija Džafić2Diana Brlek Gorski3Borka Šimpraga4Fani Krstulović5Tajana Amšel Zelenika6Andrea Humski7Croatian Veterinary Institute, Branch Poultry Centre, Heinzelova Str. 55, 10000 Zagreb, CroatiaCroatian Veterinary Institute, Branch Poultry Centre, Heinzelova Str. 55, 10000 Zagreb, CroatiaCroatian Veterinary Institute, Branch Veterinary Institute Rijeka, Podmurvice 29, 51000 Rijeka, CroatiaCroatian Institute of Public Health, Rockefeller Str. 7, 10000 Zagreb, CroatiaCroatian Veterinary Institute, Branch Poultry Centre, Heinzelova Str. 55, 10000 Zagreb, CroatiaCroatian Veterinary Institute, Branch Poultry Centre, Heinzelova Str. 55, 10000 Zagreb, CroatiaCroatian Veterinary Institute, Branch Poultry Centre, Heinzelova Str. 55, 10000 Zagreb, CroatiaCroatian Veterinary Institute, Savska Str. 143, 10000 Zagreb, CroatiaThis study aimed to assess the presence of thermotolerant <i>Campylobacter</i> spp., as one of the most important foodborne zoonotic pathogens, in three shellfish species: mussels (<i>Mytilus galloprovincialis</i>), oysters (<i>Ostrea edulis</i>) and queen scallops (<i>Aequipecten opercularis</i>). The samples were collected from nine locations in the Istrian aquatory, Croatia. Isolation of <i>Campylobacter</i> was done according to standard ISO method, and species were identified using multiplex PCR. Isolates identified as <i>C. jejuni</i> and <i>C. lari</i> were genotyped using multilocus sequence typing (MLST) to determine the potential source of contamination. Among 108 examined samples of bivalve molluscs, mussels dominated and were the only ones found positive for the presence of <i>Campylobacter</i> (25.6%). In total, 19 <i>C. lari</i> and 1 <i>C. jejuni</i> strains were isolated. <i>C. lari</i> isolates found in this study belong to 13 sequence types (STs), and 9 of them are newly described in this paper. Two out of the four previously described <i>C. lari</i> STs that were found in this study were previously found in human stool. The only <i>C. jejuni</i> isolate was found to be sequence type 1268, which belongs to ST-1275 clonal complex that is almost exclusively found in seabirds and can sporadically cause infection in humans. Regarding the obtained results, introducing surveillance of thermotolerant <i>Campylobacter</i> in shellfish in the Republic of Croatia is advised as an improvement for public health safety.https://www.mdpi.com/2076-0817/11/8/943<i>Campylobacter jejuni</i><i>Campylobacter lari</i>bivalve molluscsMLST
spellingShingle Luka Jurinović
Biljana Ječmenica
Natalija Džafić
Diana Brlek Gorski
Borka Šimpraga
Fani Krstulović
Tajana Amšel Zelenika
Andrea Humski
First Data on <i>Campylobacter</i> spp. Presence in Shellfish in Croatia
Pathogens
<i>Campylobacter jejuni</i>
<i>Campylobacter lari</i>
bivalve molluscs
MLST
title First Data on <i>Campylobacter</i> spp. Presence in Shellfish in Croatia
title_full First Data on <i>Campylobacter</i> spp. Presence in Shellfish in Croatia
title_fullStr First Data on <i>Campylobacter</i> spp. Presence in Shellfish in Croatia
title_full_unstemmed First Data on <i>Campylobacter</i> spp. Presence in Shellfish in Croatia
title_short First Data on <i>Campylobacter</i> spp. Presence in Shellfish in Croatia
title_sort first data on i campylobacter i spp presence in shellfish in croatia
topic <i>Campylobacter jejuni</i>
<i>Campylobacter lari</i>
bivalve molluscs
MLST
url https://www.mdpi.com/2076-0817/11/8/943
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