Table 2.

Characteristics of phage patterns and PFGE profiles of isolates

Lytic phage reactions at 100× RTDa (phage pattern code)PFGE profileNo. of isolatesNo. of band differences from B1SECUrease
Classical EMRSA-15 isolates
 75wk (1)B1370+
 75wk (1)B351
 75wk (1)B572+
 75wk (1)B713
 75wk (1)B1213+
 75wk (1)B1312+
 75wk (1)B1712+
 75wk (1)B1913+
 75wk (1)B2412+
Variant EMRSA-15 isolates
83C/90wk ±42E (2a)B2191+
83C/90wk (2a)B110+
83C/90wk (2a)B1825+
83C (2b)B613+
42E/75wk/81/90wk (3a)B3281
42E/81/83C ± 90wk (3b or 3d)B4212
42E/75/81/83C/90wk (3c)B773
42E/81wk/83C(3d)B914
42E/81wk/83Cwk (3d)B1014
42E/81/83C(3d)B1116
42E/81/83C(3d)B1523
42E/81/83C/90wk (3b)B1625
42E/75wk/81wk/83C/90wk (3c)B814
42E/75/81/83C/90(3c)B1415
42E/75wk/90wk (3e)B110+
42E/75wk/90wk (3e)B2113
42E/75wk/81/83C(3f)B2315+
Non-EMRSA-15 isolates among the variant isolates
42E/81 ± 83C (3d)C (1–5)516–17+
 42Ewk/81/83C(3d)Unique114+
 42Ewk/79wk/81wk (4)Unique115+
 83Cwk (2b)Unique116+
  • a Reactions in boldface are strong reactions in the phage type; underlined reactions varied in strength between different phage typing runs. wk, weak reaction.