scholarly journals Dissemination of Community-Acquired Methicillin-Resistant Staphylococcus aureus Clones in Northern Norway: Sequence Types 8 and 80 Predominate

2005 ◽  
Vol 43 (5) ◽  
pp. 2118-2124 ◽  
Author(s):  
A.-M. Hanssen ◽  
A. Fossum ◽  
J. Mikalsen ◽  
D. S. Halvorsen ◽  
G. Bukholm ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Methicillin Resistant ◽  
Northern Norway ◽  
Sequence Types

scholarly journals Genome Sequences of Livestock-Associated Methicillin-Resistant Staphylococcus aureus spa Type t899 Strains Belonging to Three Different Sequence Types (ST398, ST9, and ST4034)

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Henok Ayalew Tegegne ◽  
Ivana Koláčková ◽  
Martina Florianová ◽  
Tereza Gelbíčová ◽  
Pierre Wattiau ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Draft Genome ◽  
Genome Sequences ◽  
Methicillin Resistant ◽  
Content Type ◽  
Mrsa Strains ◽  
Sequence Types ◽  
Spa Type

Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) is an emerging MRSA lineage rapidly evolving in the community. In this report, we present the draft genome sequences of nine LA-MRSA strains.

scholarly journals Methicillin-Resistant Staphylococcus aureus ST80 Induce Lower Cytokine Production by Monocytes as Compared to Other Sequence Types

2019 ◽  
Vol 9 ◽  
Author(s):  
Fevronia Kolonitsiou ◽  
Matthaios Papadimitriou-Olivgeris ◽  
Anastasia Spiliopoulou ◽  
Eleanna Drougka ◽  
Eleni Jelastopulu ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Cytokine Production ◽  
Methicillin Resistant ◽  
Sequence Types

scholarly journals Changing epidemiology of presumptive community-associated-methicillin-resistant Staphylococcus aureus in Slovenia in 2014-2015 compared to 2010

2020 ◽  
Vol 59 (4) ◽  
pp. 236-244
Author(s):  
Urška Dermota ◽  
Irena Grmek Košnik ◽  
Sandra Janežič ◽  
Maja Rupnik
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
P Value ◽  
Methicillin Resistant ◽  
Clinical Specimens ◽  
Important Group ◽  
Clonal Distribution ◽  
Severe Infections ◽  
Mrsa Strains ◽  
Sequence Types

AbstractIntroductionAlthough the distinction between the Community-Associated-Methicillin-Resistant Staphylococcus aureus (CA-MRSA) and Hospital-Associated-Methicillin-Resistant S. aureus (HA-MRSA) has blurred in recent years, the CA-MRSA is an important group because of its potential to cause fulminant and severe infections. Its importance has further increased with the emergence of Livestock-Associated-Methicillin-Resistant S. aureus (LA-MRSA).MethodsIn the present study we analysed clonal distributions and virulence factors in presumptive CA-MRSA isolated from January 2014 to December 2015 and compared the results with our previous study from 2010. Phenotypic definition for presumptive CA-MRSA was based on resistance to cefoxitin and oxacillin and susceptibility to at least two of the following four antibiotics: ciprofloxacin, erythromycin, clindamycin and gentamicin.ResultsIn 2014 and 2015 altogether 304 MRSA isolates fulfilled our screening phenotypic definition, 45 isolates were cultivated from clinical specimens and 259 from screening specimens. Sequence types ST398, LA-MRSA and mecC MRSA increased significantly in 2015 compared to 2010 (p-value <0.05) and were spread over Slovenia.ConclusionThe clonal distribution of presumptive CA-MRSA has changed within the study period in Slovenia. In 2015 the most frequent clone among clinical and screening specimens was a pig-associated clone, ST398, but the number of confirmed ST398 infections remains low. While previously ST398 and mecC positive MRSA strains were geographically limited, they have spread throughout the country since 2010.

scholarly journals Tracking methicillin-resistant Staphylococcus aureus clones in a hospital in Southern Mexico

2020 ◽  
Vol 62 (2, Mar-Abr) ◽  
pp. 186
Author(s):  
Miguel Ángel Ortíz-Gil ◽  
Maria Elena Velazquez-Meza ◽  
Gabriela Echániz-Aviles ◽  
Javier Paul Mora-Domínguez ◽  
María Noemi Carnalla-Barajas ◽  
...  
Keyword(s):  
New York ◽  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Hospital Environment ◽  
Molecular Characteristics ◽  
Southern Mexico ◽  
Methicillin Resistant ◽  
Mrsa Strains ◽  
Sequence Types ◽  
Sccmec Types

Objective. This study describes the clinical and molecular characteristics of methicillin-resistant Staphylococcus aureus (MRSA) strains that were collected in the Hospital Regional de Alta Especialidad de Veracruz (HRV). Material and Methods. A total of 107 MRSA strains from individual patients were examined in the present study. The strains examined were collected between September 2009 and September 2010. The clinical and demographic characteristics of patients were analyzed; molecular typing by pulsed-field gel electrophoresis (PFGE), staphylococcal chromosomal cassette mec (SCCmec) typing and multilocus sequence typing (MLST) were used to characterize the isolates. Results. Two PFGE patterns (NY/J and IB) were identified with 4 and 3 subtypes respectively. The isolates analyzed showed two SCCmec types (I and II) and two sequence types (ST), ST247 and ST5 related with the Iberian and New York/Japan clones respectively. Conclusion. This study establishes the presence of two very important clonal lineages of MRSA: New York/Japan and Iberian clone in hospital environment.  

scholarly journals Human-Associated Methicillin-Resistant Staphylococcus aureus Clonal Complex 80 Isolated from Cattle and Aquatic Environments

Antibiotics ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1038
Author(s):  
Khuliso Ramaite ◽  
Mutshiene Deogratias Ekwanzala ◽  
John Barr Dewar ◽  
Maggy Ndombo Benteke Momba
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Clonal Complex ◽  
Animal Manure ◽  
Environmental Matrices ◽  
Cattle Farm ◽  
Methicillin Resistant ◽  
Resistant Genes ◽  
Cattle Farms ◽  
Sequence Types

Background: Human-associated methicillin-resistant Staphylococcus aureus (HA-MRSA) has mainly been reported in South African pig and chicken farms. The prevalence of antibiotic-resistant genes (ARGs), virulence factors (VFs), and multilocus sequence types (MLSTs) associated with HA-MRSA in cattle farms has not been reported. Consequently, this study characterised LA-MRSA and its spread from cattle farms into the environment. Method: Husbandry soil (HS), nearby river water (NRW), animal manure (AM) and animal drinking water (ADW) were collected on and around a cattle farm. Presumptive MRSA isolates were identified from these samples using CHROMagar media and genotyped as MRSA sequence types (STs), selected ARGs, and VFs, using polymerase chain reaction. An MLST-based dendrogram was generated to link the farm MRSA strains with those in a nearby river. Results: The prevalence of MRSA was 30.61% for HS, 28.57% for ADW, 22.44% for NRW, and 10.20% for AM. Isolates from HS harboured the highest number of resistant genes, with 100% for mecA, 91.66% for ermA, and 58.33% for blaZ. However, no ermC or tetM genes were detected. MRSA isolates from AM harboured the lowest number of resistant genes. Only sec and seq enterotoxins were found in all the assessed MRSA isolates. MRSA from the farm revealed six STs (ST80, ST728, ST1931, ST2030, ST3247, and ST5440); all of STs belonged to clonal complex 80 (CC80). An MLST-based dendrogram based on the concatenated sequences of MLST genes under the maximum likelihood criterion revealed four clades of amalgamated MRSA isolates from various livestock environmental matrices, including the NRW. Conclusion: The results suggest that livestock environmental matrices might be reservoirs of MRSA that could subsequently disseminate through runoff to pollute water resources. Therefore, continued surveillance of HA-MRSA in livestock environments is warranted.

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