Journal
JOURNAL OF FOOD PROTECTION
Volume 85, Issue 1, Pages 54-59Publisher
INT ASSOC FOOD PROTECTION
DOI: 10.4315/JFP-21-172
Keywords
Key words; Antimicrobial resistance; Detection; Food; Listeria monocytogenes; Serogrouping
Funding
- Banat's University of Agricultural Sciences and Veterinary Medicine King Michael I of Romania from Timisoara, Romania
- Research Institute for Biosecurity and Bioengineering Timisoara, Romania
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This study used molecular serogrouping to assess the presence and antimicrobial susceptibility profile of Listeria monocytogenes isolates from food products of different animal origin in central Romania. The study found that L. monocytogenes was present in a significant proportion of the screened samples and exhibited resistance to multiple antibiotics. These findings highlight the importance of understanding the spread of this pathogen in Romanian food products and its potential impact on public health.
This study used molecular serogrouping to assess the presence and antimicrobial susceptibility profile of Listeria monocytogenes isolates from food products of different animal origin, collected from a county situated in the historical region of Transylvania in central Romania. Seventeen (7.7%) of 221 screened samples were positive for L. monocytogenes; these included 8 (6.2%) of 130 ready-to-eat products (i.e., sausages, ham, and smoked specialties), 6 (12.8%) of 47 raw meat samples (i.e., minced pork, pork organs, and snails), and 3 (6.8%) of 44 dairy samples (i.e., assortment of cheeses). The identified L. monocytogenes serogroups were 1/2a-3a (47.1%), 4b-4d-4e (29.4%), 1/2c-3c (11.8%), and 4a-4c (11.8%). All isolates were resistant to benzylpenicillin and fusidic acid. Resistance was also detected toward oxacillin (88.2%), fosfomycin (82.4%), clindamycin (76.5%), imipenem (52.9%), ciprofloxacin (41.2%), rifampin (41.2%), trimethoprim-sulfamethoxazole (29.4%), and tetracycline (29.4%). On the other hand, all isolates proved susceptible to gentamicin, moxifloxacin, teicoplanin, vancomycin, tigecycline, erythromycin, and linezolid. All tested strains exhibited multidrug resistance, resulting in the expression of a total of 12 resistance profiles. These findings extend the understanding of the spread of an important pathogen in Romanian food products, highlighting a substantial public health issue and medical concern, especially for consumers with a compromised health status.
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