Salmonella enterica serotypes isolated for the first time in laying hens, and their susceptibility to antibiotics

Polat, İbrahim; Şen, Burhan; Onurdağ, Fatma Kaynak

doi:10.1016/j.psj.2023.103180

Cited by 4 publications

(1 citation statement)

References 52 publications

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“…In the literature, phylogenetic analyses of S. bredeney partitioned the serovar in two ST (ST241 and ST897) [ 43 ]. In particular, the ST897 is associated also with the serovars S. kimuenza , an infrequent serotype found in humans, livestock and poultry [ 44 , 45 , 46 ]. Furthermore, the strains of S. infantis all belonged to ST32, considered the dominant MLST type of this serovar [ 47 ].…”

Section: Discussionmentioning

confidence: 99%

Detection of Salmonella Reservoirs in Birds of Prey Hosted in an Italian Wildlife Centre: Molecular and Antimicrobial Resistance Characterisation

Corradini,

De Bene,

Russini

et al. 2024

Microorganisms

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In the European Union, salmonellosis is one of the most important zoonoses reported. Poultry meat and egg products are the most common food matrices associated with Salmonella presence. Moreover, wild and domestic animals could represent an important reservoir that could favour the direct and indirect transmission of pathogens to humans. Salmonella spp. can infect carnivorous or omnivorous wild birds that regularly ingest food and water exposed to faecal contamination. Birds kept in captivity can act as reservoirs of Salmonella spp. following ingestion of infected prey or feed. In this paper, we describe the isolation of different Salmonella serovars in several species of raptors hosted in aviaries in an Italian wildlife centre and in the raw chicken necks used as their feed but intended for human consumption. Characterisations of strains were carried out by integrating classical methods and whole genome sequencing analysis. The strains of S. bredeney isolated in poultry meat and birds belonged to the same cluster, with some of them being multidrug-resistant (MDR) and carrying the Col(pHAD28) plasmid-borne qnrB19 (fluoro)quinolone resistance gene, thus confirming the source of infection. Differently, the S. infantis found in feed and raptors were all MDR, carried a plasmid of emerging S. infantis (pESI)-like plasmid and belonged to different clusters, possibly suggesting a long-lasting infection or the presence of additional undetected sources. Due to the high risk of fuelling a reservoir of human pathogens, the control and treatment of feed for captive species are crucial.

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