Phage typing
Phage typing was performed according to Blair and Williams
[30], using the group of 23 phages from the Basic International
Set of Typing Phages. All phages were used at routine test
dilution and 100 · routine test dilution. Interpretation was
based on lysis by at least two different phages [31,32]. The
Specific Set of Typing Phages for MRSA was also used