Salmonella Schwarzengrund, Akuafo, and O:16 isolated from vacuum-packaged beef produced in the state of Mato Grosso, Brazil.
J Infect Dev Ctries
; 15(12): 1876-1882, 2021 12 31.
Article
em En
| MEDLINE
| ID: mdl-35044946
INTRODUCTION: Salmonella spp. is a pathogen associated with foodborne infections, mainly in foods of animal origin. In this context, the present study investigated the occurrence of Salmonella serotypes, genotypes and the antimicrobial resistance profiles of strains in fresh beef produced in Mato Grosso, Brazil. METHODOLOGY: A total of 107 samples from 13 different slaughterhouses in the Mato Grosso were analyzed. Suggestive Salmonella spp. colonies detected during the biochemical screening were submitted to DNA extraction, and hilA gene amplification was used for the PCR reaction. Antimicrobial resistance analyses were performed using 17 antimicrobial agents from eight different classes by the disk diffusion method. Strains exhibiting multiple drug resistances were submitted to PCR genotyping based on repetitive sequences (rep-PCR), using a commercial semiautomatic DiversiLab® system. RESULTS: A total of 5.6% (6/107) of the samples tested positive by the conventional method and were confirmed by PCR, namely two S. Akuafo, two non-typable Salmonella enterica strains, one Salmonella O:16 serovar, and one S. Schwarzengrund. The antimicrobial resistance profiles indicated resistance to gentamicin (30%), tetracycline, nitrofurantoin, and trimethoprim + sulfamethoxazole (16%). Genotyping indicated a 70% difference between S. Schwarzengrund and the non-typable Salmonella strains. No genetic similarities were observed between the six Salmonella isolates based on rep-PCR, including two S. Akuafo. CONCLUSIONS: The results obtained herein corroborate that Salmonella serovar Schwarzengrund is commonly isolated in animal products in the state of Mato Grosso, Brazil, also highlighting the presence of two unusual Salmonella serovars in beef (Akuafo and O:16).
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Salmonella
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Salmonelose Animal
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Carne
Tipo de estudo:
Clinical_trials
Limite:
Animals
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Humans
País/Região como assunto:
America do sul
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Brasil
Idioma:
En
Revista:
J Infect Dev Ctries
Assunto da revista:
DOENCAS TRANSMISSIVEIS
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Itália