Tasa de incidencia de mastitis clínica y susceptibilidad antibiótica de patógenos productores de mastitis en ganado lechero del norte de Antioquia, Colombia

Vásquez, Nicolás Ramírez; Silva, Jorge Arturo Fernández; Palacio, Luis

doi:10.19052/mv.5173

Cited by 5 publications

(5 citation statements)

References 24 publications

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“…Regarding the antibiotic susceptibility profiles obtained, the penicillin and lincomycin showed the highest resistance profile. These results are consistent with those reported by other studies carried out in the same region (Ramírez et al, 2018;Ramírez et al, 2011) and in studies performed in China, as well as in Sweden and Tunisia, which also reported high penicillin resistance (Ben Said et al, 2016;Käppeli et al, 2019;Liu et al, 2020).…”

Section: Discussionsupporting

confidence: 92%

High genetic diversity and zoonotic potential of Staphylococcus aureus strains recovered from bovine intramammary infections in Colombians dairy herds

Torres

Vargas

Reyes-Vélez

et al. 2023

Comparative Immunology, Microbiology and Infectious Diseases

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Section: Discussionsupporting

confidence: 92%

High genetic diversity and zoonotic potential of Staphylococcus aureus strains recovered from bovine intramammary infections in Colombians dairy herds

Torres

Vargas

Reyes-Vélez

et al. 2023

Comparative Immunology, Microbiology and Infectious Diseases

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“…In contrast, studies from the same study area on Klebsiella spp. isolated from dairy cattle with clinical and subclinical mastitis showed a 40% susceptibility to ampicillin [44], whereas in other countries the rate of resistance to the same antibiotic was variable [23,[46][47][48][49]. In addition, the fosfomycin resistance detected in this study is consistent with previous studies reporting K. pneumoniae from raw milk [47].…”

Section: Discussionsupporting

confidence: 89%

“…Regarding to antibiotic susceptibility of isolates evaluated, E. coli isolates obtained were sensitive to all the antibiotics, however, other local studies have shown resistance patterns of E. coli isolated from bulk milk samples [17] and from bovine mammary quarter samples [44] in the same region and in other regions of Colombia [45]. In contrast, studies from the same study area on Klebsiella spp.…”

Section: Discussionmentioning

confidence: 81%

Extended-spectrum beta-lactamase-producing Klebsiella pneumoniae and risk factors associated with high total bacterial count in bulk tank milk from dairy farms in Colombia

Campos,

Akineden,

Fernández-Silva

et al. 2024

Braz J Microbiol

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The objective of the study was to evaluate the frequency and genetic characteristics of ESBL-producing Escherichia coli and Klebsiella spp. and the risk factors associated with a high total bacterial count in bulk tank milk samples of dairy farms in three municipalities of the Antioquia Department, Colombia. Fifteen samples were positive for E. coli and Klebsiella spp. Subsequent analysis of the 16 S rRNA gene sequences confirmed these isolates included E. coli (n = 3), K. oxytoca (n = 11), and K. pneumoniae (n = 1). None of the isolates was positive for ESBL identification by phenotypic methods, but the only the isolate of K. pneumoniae was positive for the blaSHV61 gene by sequence analysis. The antibiotic susceptibility evaluation for all Klebsiella spp. isolates identified resistance to fosfomycin (50%; 6/12) and ampicillin (100%; 12/12). While most of the herds maintain adequate hygienic quality, specific risk factors such as having more than 60 milking cows, frequent changes in milkers, milking in paddocks, and using a chlorinated product for pre-dipping have been identified as associated with a high total bacterial count > 100,000 CFU/mL in bulk tank milk. However, certain variables including the milker being the owner of the animals and the proper washing and disinfection of the milking machine contribute to maintain a high level of hygiene and quality in the raw milk stored in the tanks. In conclusion, the frequency of ESBL producers was relatively low, with only K. pneumoniae testing positive for the blaSHV ESBL type. The presence of these bacteria in milk tanks represents a potential risk to public health for consumers of raw milk and its derivatives.

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“…According to the phenotypic predictions performed in PATRIC and confirmed by Vitek R 2 system, S. aureus Sa1FB is susceptible to different antibiotics and resistant to penicillin. Previous works performed in the region showed the same behavior (penicillin resistance) in the evaluated S. aureus strains (47,48). Despite low antibiotic resistance found in Sa1FB, a study reported that S. aureus strains carrying the bap gene were less susceptible to antibiotic treatments when forming biofilm in vitro and more persistent in the bovine mammary gland (22).…”

Section: Discussionsupporting

confidence: 55%

Phenotypic Characterization and Whole Genome Analysis of a Strong Biofilm-Forming Staphylococcus aureus Strain Associated With Subclinical Bovine Mastitis in Colombia

et al. 2020

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Staphylococcus aureus represent a serious threat to public health due to food safety, antibiotic resistance, and the potential zoonotic transmission of strains between dairy cattle and humans. Biofilm formation by S. aureus results in chronicity of the infections which confers protection against the immune response and antibiotics. Likewise, biofilm allows the exchange of mobile genetic material among different strains through microbial interactions inside the matrix. In Colombia, where S. aureus continues to be one of the main pathogens isolated from bovine intramammary infections and where milking by hand is highly frequent, there are knowledge gaps on the zoonotic potential of the strains. Therefore, the aim of this work was to characterize genotypically and phenotypically the S. aureus Sa1FB strain with strong biofilm production and to perform genomic and phenotypic comparisons with other relevant S. aureus strains (native and references strains). These results show a highly productive strain of biofilm and a low ability of cell invasion compared to the other two native strains. In addition, high genomic similarity between S. aureus Sa1FB and the reference strains was observed, despite of the differences reported at the clinical level. However, Sa1FB exhibited special features in terms of mobile genetic elements, highlighting its ability to accept foreign genetic material. Indeed, this could increase mutation, pathogenesis, and adaptability to new hosts, representing a risk for people in contact with the milk obtained from animals infected with these strains. These results present the relevance of surveillance for early detection of emergent clones with zoonotic potential, which reduces the risk of occupational exposure and their spread in the community.

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Tasa de incidencia de mastitis clínica y susceptibilidad antibiótica de patógenos productores de mastitis en ganado lechero del norte de Antioquia, Colombia

Cited by 5 publications

References 24 publications

High genetic diversity and zoonotic potential of Staphylococcus aureus strains recovered from bovine intramammary infections in Colombians dairy herds

High genetic diversity and zoonotic potential of Staphylococcus aureus strains recovered from bovine intramammary infections in Colombians dairy herds

Extended-spectrum beta-lactamase-producing Klebsiella pneumoniae and risk factors associated with high total bacterial count in bulk tank milk from dairy farms in Colombia

Phenotypic Characterization and Whole Genome Analysis of a Strong Biofilm-Forming Staphylococcus aureus Strain Associated With Subclinical Bovine Mastitis in Colombia

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