Occurrence of a New Variant of <i>Salmonella</i> Infantis Lacking Somatic Antigen
<i>Salmonella</i> Infantis is one of the most frequent serovars reported in broilers and is also regularly identified in human salmonellosis cases, representing a relevant public health problem. In the laboratories of the Istituto Zooprofilattico Sperimentale della Puglia e della Basilic...
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MDPI AG
2023-09-01
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| Series: | Microorganisms |
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| Online Access: | https://www.mdpi.com/2076-2607/11/9/2274 |
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| author | Alessandra Alessiani Gianfranco La Bella Adelia Donatiello Gilda Occhiochiuso Simona Faleo Antonella Didonna Luigi D’Attoli Patrizia Selicato Carmine Pedarra Giovanna La Salandra Maria Emanuela Mancini Pietro Di Taranto Elisa Goffredo |
| author_facet | Alessandra Alessiani Gianfranco La Bella Adelia Donatiello Gilda Occhiochiuso Simona Faleo Antonella Didonna Luigi D’Attoli Patrizia Selicato Carmine Pedarra Giovanna La Salandra Maria Emanuela Mancini Pietro Di Taranto Elisa Goffredo |
| author_sort | Alessandra Alessiani |
| collection | DOAJ |
| description | <i>Salmonella</i> Infantis is one of the most frequent serovars reported in broilers and is also regularly identified in human salmonellosis cases, representing a relevant public health problem. In the laboratories of the Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata (IZSPB), six <i>Salmonella</i> Infantis strains with antigenic formula -:r:1,5 have been isolated from the litter and carcass of broilers between 2018 and 2022. The strains were investigated to evaluate their phenotype, antibiotic resistance and genomic profiles. Genomic analysis confirmed that the isolates belonged to the Infantis serotype and to the sequence type ST32. Moreover, all strains showed a multidrug-resistant (MDR) profile and were characterised by the presence of the IncFIB plasmid incompatibility group. Three strains had the <i>bla</i><sub>CTX-M-1</sub> gene, and one of them carried IncX1. The presence of this new variant of <i>S</i>. Infantis is particularly relevant because it could expand the landscape of the <i>S</i>. Infantis population. The absence of the somatic antigen could pose a problem in both isolation and serotyping and a consequent public health concern due to the spread of <i>Salmonella</i> infection. |
| first_indexed | 2024-03-10T22:27:33Z |
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| id | doaj.art-eb07f20312c347a78396f3206cc4f60d |
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| issn | 2076-2607 |
| language | English |
| last_indexed | 2024-03-10T22:27:33Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Microorganisms |
| spelling | doaj.art-eb07f20312c347a78396f3206cc4f60d2023-11-19T12:03:03ZengMDPI AGMicroorganisms2076-26072023-09-01119227410.3390/microorganisms11092274Occurrence of a New Variant of <i>Salmonella</i> Infantis Lacking Somatic AntigenAlessandra Alessiani0Gianfranco La Bella1Adelia Donatiello2Gilda Occhiochiuso3Simona Faleo4Antonella Didonna5Luigi D’Attoli6Patrizia Selicato7Carmine Pedarra8Giovanna La Salandra9Maria Emanuela Mancini10Pietro Di Taranto11Elisa Goffredo12Istituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, ItalyIstituto Zooprofilattico Sperimentare della Puglia e della Basilicata, Via Manfredonia 20, 71121 Foggia, Italy<i>Salmonella</i> Infantis is one of the most frequent serovars reported in broilers and is also regularly identified in human salmonellosis cases, representing a relevant public health problem. In the laboratories of the Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata (IZSPB), six <i>Salmonella</i> Infantis strains with antigenic formula -:r:1,5 have been isolated from the litter and carcass of broilers between 2018 and 2022. The strains were investigated to evaluate their phenotype, antibiotic resistance and genomic profiles. Genomic analysis confirmed that the isolates belonged to the Infantis serotype and to the sequence type ST32. Moreover, all strains showed a multidrug-resistant (MDR) profile and were characterised by the presence of the IncFIB plasmid incompatibility group. Three strains had the <i>bla</i><sub>CTX-M-1</sub> gene, and one of them carried IncX1. The presence of this new variant of <i>S</i>. Infantis is particularly relevant because it could expand the landscape of the <i>S</i>. Infantis population. The absence of the somatic antigen could pose a problem in both isolation and serotyping and a consequent public health concern due to the spread of <i>Salmonella</i> infection.https://www.mdpi.com/2076-2607/11/9/2274<i>Salmonella</i> Infantis<i>Salmonella</i> somatic antigenserotypingmultidrug resistance |
| spellingShingle | Alessandra Alessiani Gianfranco La Bella Adelia Donatiello Gilda Occhiochiuso Simona Faleo Antonella Didonna Luigi D’Attoli Patrizia Selicato Carmine Pedarra Giovanna La Salandra Maria Emanuela Mancini Pietro Di Taranto Elisa Goffredo Occurrence of a New Variant of <i>Salmonella</i> Infantis Lacking Somatic Antigen Microorganisms <i>Salmonella</i> Infantis <i>Salmonella</i> somatic antigen serotyping multidrug resistance |
| title | Occurrence of a New Variant of <i>Salmonella</i> Infantis Lacking Somatic Antigen |
| title_full | Occurrence of a New Variant of <i>Salmonella</i> Infantis Lacking Somatic Antigen |
| title_fullStr | Occurrence of a New Variant of <i>Salmonella</i> Infantis Lacking Somatic Antigen |
| title_full_unstemmed | Occurrence of a New Variant of <i>Salmonella</i> Infantis Lacking Somatic Antigen |
| title_short | Occurrence of a New Variant of <i>Salmonella</i> Infantis Lacking Somatic Antigen |
| title_sort | occurrence of a new variant of i salmonella i infantis lacking somatic antigen |
| topic | <i>Salmonella</i> Infantis <i>Salmonella</i> somatic antigen serotyping multidrug resistance |
| url | https://www.mdpi.com/2076-2607/11/9/2274 |
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