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New dominant spa type t2741 in livestock-associated MRSA (CC398-MRSA-V) in Finnish fattening pigs at slaughter

Overview of attention for article published in Antimicrobial Resistance and Infection Control, March 2016
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4 tweeters

Citations

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15 Dimensions

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34 Mendeley
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Title
New dominant spa type t2741 in livestock-associated MRSA (CC398-MRSA-V) in Finnish fattening pigs at slaughter
Published in
Antimicrobial Resistance and Infection Control, March 2016
DOI 10.1186/s13756-016-0105-8
Pubmed ID
Authors

Annamari Heikinheimo, Sophia Johler, Laura Karvonen, Jérôme Julmi, Maria Fredriksson-Ahomaa, Roger Stephan, Heikinheimo, Annamari, Johler, Sophia, Karvonen, Laura, Julmi, Jérôme, Fredriksson-Ahomaa, Maria, Stephan, Roger

Abstract

The emergence of livestock-associated MRSA has become a growing public health concern worldwide. Studies elucidating the population structure, as well as resistance phenotypes and virulence gene profiles of livestock-associated MRSA strains are needed to improve risk assessment and to develop effective control measures. The objective of this study therefore was to determine i) clonal complexes and spa types, as well as ii) resistance phenotypes and iii) virulence and resistance gene profiles of livestock-associated MRSA isolated from Finnish fattening pigs at slaughter. Fifty MRSA isolates collected from Finnish fattening pigs at slaughter were characterized by spa typing and DNA microarray profiling. In addition, antimicrobial susceptibility testing was performed using the Kirby Bauer disk diffusion method. MRSA isolates were assigned to clonal complexes CC1 (n = 4) and CC398 (n = 46). One dominant spa type (t2741) was present in 33 out of 50 investigated isolates, originating from 15 out of 18 farms. The remaining isolates were assigned to spa types t034 (n = 7), t108 (n = 5), and t011 (n = 1). Although each herd exhibited isolates assigned to one clonal complex only, five herds harbored MRSA isolates of either two or three different spa types. All tested MRSA isolates were phenotypically resistant to penicillin, oxacillin, cefoxitin, and tetracycline. With the exception of the isolates assigned to t108, all isolates exhibited resistance to clindamycin. On the genomic level, all isolates exhibited mecA, blaZ/I/R, and tetK, and were assigned to SCCmec type V. Many isolates also harbored tetM (46/50 isolates), lnuB (41/50 isolates), ermB (26/50 isolates), and one isolate was positive for aadD. DNA microarray profiling showed that all isolates of the dominant CC398/t2741 MRSA-V type belonged to agr type I, capsule type 5, and were negative for fnbB. Interestingly, one isolate of CC398/t2741 MRSA-V was agr negative and also lacked hld. A new dominant LA-MRSA clone (CC398/t2741, SCCmec type V) was identified among fattening pigs in Finland. This is the first study identifying t2741 as a common spa type in LA-MRSA in pigs.

Twitter Demographics

The data shown below were collected from the profiles of 4 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 34 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Portugal 1 3%
France 1 3%
Unknown 32 94%

Demographic breakdown

Readers by professional status Count As %
Researcher 8 24%
Student > Ph. D. Student 7 21%
Other 3 9%
Student > Doctoral Student 3 9%
Student > Master 2 6%
Other 6 18%
Unknown 5 15%
Readers by discipline Count As %
Veterinary Science and Veterinary Medicine 9 26%
Agricultural and Biological Sciences 8 24%
Immunology and Microbiology 5 15%
Biochemistry, Genetics and Molecular Biology 2 6%
Environmental Science 1 3%
Other 3 9%
Unknown 6 18%

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 11 March 2016.
All research outputs
#8,122,586
of 14,123,042 outputs
Outputs from Antimicrobial Resistance and Infection Control
#561
of 758 outputs
Outputs of similar age
#123,200
of 267,437 outputs
Outputs of similar age from Antimicrobial Resistance and Infection Control
#7
of 9 outputs
Altmetric has tracked 14,123,042 research outputs across all sources so far. This one is in the 40th percentile – i.e., 40% of other outputs scored the same or lower than it.
So far Altmetric has tracked 758 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 15.4. This one is in the 22nd percentile – i.e., 22% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 267,437 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 50% of its contemporaries.
We're also able to compare this research output to 9 others from the same source and published within six weeks on either side of this one. This one has scored higher than 2 of them.