Prevalence of methicillin-resistant Staphylococci on a farm: staff can harbour MRS when animals do not.
Abstract: The aim of this work was to establish the prevalence of methicillin-resistant Staphylococci (MRS) in the animals and staff of a teaching and research farm. Samples of dairy cattle (36), beef cattle (26), sheep (19), horses (21), pigs (23), goats (23) and humans (13) were collected and screened for the presence of MRS. The detection of mecA gene was performed by PCR to determine the resistance of the samples to methicillin. Antimicrobial-resistance testing to penicillin, meropenem, ceftriaxone, cephalothin, oxacillin, levofloxacin, enrofloxacin, chloramphenicol, ciprofloxacin, gentamicin, clindamycin, erytromycin, linezolid, sulfamethoxazole/trimethoprim, tetracycline, doxycycline and vancomycin was performed on the mecA+ isolates. From the 161 samples, four methicillin-resistant coagulase-negative Staphylococci (MRCoNS) were isolated from human beings (31%), whereas none was isolated from animals (0%). No methicillin-resistant Staphylococcus aureus (MRSA) were isolated. All of the MRCoNS isolates from this work presented different antimicrobial resistance patterns. MRCoNS may be present in humans associated with animals while not present in the animals. Selective pressure outside of the farm and a lack of MRCoNS transmission between humans and animals may be responsible for this lack of correlation.
© 2011 Blackwell Verlag GmbH.
Publication Date: 2011-05-25 PubMed ID: 21824366DOI: 10.1111/j.1863-2378.2011.01413.xGoogle Scholar: Lookup
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- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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The research focuses on evaluating the prevalence of methicillin-resistant Staphylococci (MRS) in both humans and different types of animals at a teaching and research farm. The results revealed that humans could carry MRS even when animals do not.
Research Methodology
- In this research, samples from various sources were collected. This included dairy cattle (36), beef cattle (26), sheep (19), horses (21), pigs (23), goats (23), and humans (13).
- These samples were then screened for the presence of Methicillin-resistant Staphylococci (MRS).
- To determine resistance to methicillin within these samples, the researchers utilized PCR for the detection of the mecA gene.
- The isolates confirmed to have the mecA gene then went through antimicrobial-resistance testing. The antibiotics tested include penicillin, meropenem, ceftriaxone, cephalothin, oxacillin, levofloxacin, enrofloxacin, chloramphenicol, ciprofloxacin, gentamicin, clindamycin, erythromycin, linezolid, sulfamethoxazole/trimethoprim, tetracycline, doxycycline, and vancomycin.
Key Findings
- Out of the 161 samples, methicillin-resistant coagulase-negative Staphylococci (MRCoNS) were isolated from human beings (31%), while none were isolated from animals.
- All of the MRCoNS isolates from this work presented different antimicrobial resistance patterns.
- Interestingly, no methicillin-resistant Staphylococcus aureus (MRSA) were isolated as part of this research.
Conclusions and Implications
- The study concludes that MRCoNS may be present in humans associated with animals while not present in the animals themselves.
- Two potential explanations are given for this lack of correlation. One is that there can be selective pressure outside of the farm, and another is a lack of transmission of MRCoNS between humans and animals.
- The findings have significant implications for understanding MRCoNS colonization and transmission dynamics within a farm setting, which may be useful in public health.
Cite This Article
APA
Aquino Gde V, Maluta RP, de Ávila FA.
(2011).
Prevalence of methicillin-resistant Staphylococci on a farm: staff can harbour MRS when animals do not.
Zoonoses Public Health, 59(1), 1-3.
https://doi.org/10.1111/j.1863-2378.2011.01413.x Publication
Researcher Affiliations
- Departamento de Patologia Veterinária, Laboratório de Bacteriologia, Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal, Brazil.
MeSH Terms
- Agriculture
- Animals
- Animals, Domestic
- Anti-Infective Agents / pharmacology
- Bacterial Proteins / genetics
- Brazil / epidemiology
- Cattle
- Coagulase / genetics
- Coagulase / metabolism
- Drug Resistance, Bacterial
- Female
- Goats
- Horses
- Humans
- Methicillin Resistance / genetics
- Methicillin-Resistant Staphylococcus aureus / drug effects
- Methicillin-Resistant Staphylococcus aureus / genetics
- Methicillin-Resistant Staphylococcus aureus / isolation & purification
- Penicillin-Binding Proteins
- Prevalence
- Sheep
- Staphylococcal Infections / epidemiology
- Staphylococcal Infections / microbiology
- Staphylococcus / drug effects
- Staphylococcus / genetics
- Staphylococcus / isolation & purification
- Swine
- Zoonoses / epidemiology
- Zoonoses / microbiology
Citations
This article has been cited 1 times.- Freitas Ribeiro L, Akira Sato R, de Souza Pollo A, Marques Rossi GA, do Amaral LA. Occurrence of Methicillin-Resistant Staphylococcus spp. on Brazilian Dairy Farms that Produce Unpasteurized Cheese. Toxins (Basel) 2020 Dec 8;12(12).
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