scholarly journals Methicillin-Resistant Staphylococcus aureus Harboring mecC Still Eludes Us in East London, United Kingdom

2019 ◽  
Vol 57 (6) ◽  
Author(s):  
H. Ciesielczuk ◽  
M. Xenophontos ◽  
J. Lambourne

ABSTRACT Reports of methicillin-resistant Staphylococcus aureus (MRSA) harboring the mecC gene have increased in the UK since first being described. To our diagnostic S. aureus multiplex PCR, a mecC primer set was designed and implemented, and then the prevalence in our patient population was investigated. Fewer than 1% of the clinical isolates possessed the mecC gene, confirming that mecA remains the dominant genetic determinant of MRSA in East London.

2015 ◽  
Vol 59 (12) ◽  
pp. 7837-7841 ◽  
Author(s):  
I. J. Abbott ◽  
A. W. J. Jenney ◽  
C. J. Jeremiah ◽  
M. Mirčeta ◽  
J. P. Kandiah ◽  
...  

ABSTRACTA total of 421 methicillin-resistantStaphylococcus aureus(MRSA) clinical isolates were tested for ceftaroline susceptibility by Etest (bioMérieux). A multidrug resistant phenotype was found in 40.9%, and clonal complex 239 (CC239) was found in 33.5%. Ceftaroline nonsusceptibility (MIC, >1.0 μg/ml) was 16.9% overall. Nonsusceptibility was significantly higher in CC239 (41.1%, 58/141) and in isolates with a multidrug resistant phenotype (35.5%, 61/172) compared with comparators (P< 0.0001). Nonsusceptibility of common multidrug resistant MRSA clones limits the empirical use of ceftaroline for these infections.


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