a) Bacterial species and methicillin-susceptible or resistant at least for all S. aureus isolates and preferably for all isolates.
b) Results for the following tests, where these have been used:
c) Whether the isolate is considered to be MRSA. MRSA is defined as S. aureus with methicillin resistance determined by the presense of the altered penicillin binding protein PBP2.
Final report will be published electronically showing all participants results.
In each distribution there will be a panel of 7 staphylococcal isolates, these may include S. aureus, S. pseudintermedius, S. intermedius and coagulase negative staphylococci for species identification, determination of methicillin susceptibility and identification of MRSA.
The scheme has two objectives; to correctly:
The nomenclature of Staphylococcus intermedius has recently changed and most isolates formerly called S. intermedius from dogs are called S. pseudintermedius (Devriese 2009). For the purposes of the PT exercise, where a S. intermedius is included in the panel, identification of isolates belonging to the S. intermedius group to the level of S. intermedius, S. pseudintermedius and S. delphini is not required and isolates can be identified to the “intermedius complex” level.