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Table 2 MRSA case classification and molecular epidemiology

From: The molecular epidemiology of incident methicillin-resistant Staphylococcus aureus cases among hospitalized patients in Alberta, Canada: a retrospective cohort study

Matched MRSA April 2011 – March 2013 n = 2211

Hospital Acquired (HA) n = 770 (34.8 %)

Healthcare Associated (HCA) n = 553 (25.0 %)

Community Acquired (CA) n = 888 (40.2 %)

PFGE n (% of HA)

spa type n (% of PFGE)

PFGE n (% of HCA)

spa type n (% of PFGE)

PFGE n (% of CA)

spa type n (% of PFGE)

Traditional Nosocomial n = 1098

t002 (CMRSA 2)

501 (65.1)

316 (63.1)

327 (59.1)

201 (61.5)

270 (30.4)

181 (67.0)

t003 (CMRSA 2)

72 (14.4)

65 (19.9)

28 (10.4)

t242 (CMRSA 2)

37 (7.4)

24 (7.3)

17 (6.3)

t014 (CMRSA 2)

9 (1.8)

9 (2.8)

7 (2.6)

t045 (CMRSA 2)

8 (1.6)

8 (2.5)

6 (2.2)

Other spa types (CMRSA 2)

59 (11.8) n = 25 spa types

20 (6.1) n = 14 spa types

31 (11.5) n = 22 spa types

Traditional Community n = 943

t008 (CMRSA 10)

160 (20.8)

128 (80.0)

152 (27.5)

131 (86.2)

445 (50.1)

388 (87.2)

t024 (CMRSA 10)

7 (4.4)

4 (2.6)

9 (2.0)

t648 (CMRSA 10)

4 (2.5)

4 (2.6)

6 (1.3)

Other spa types (CMRSA 10)

21 (13.1) n = 8 spa types

13 (8.9) n = 13 spa types

42 (9.4) n = 24 spa types

t128 (CMRSA7)

47 (6.1)

25 (53.2)

30 (5.4)

19 (63.3)

109 (12.3)

63 (57.8)

t1787 (CMRSA7)

3 (6.4)

6 (20.0)

17 (15.6)

t1508 (CMRSA7)

10 (21.3)

4 (13.3)

17 (15.6)

Other spa types (CMRSA7)

9 (19.1) n = 8 spa types

1 (3.3) (spa type t175)

12 (11.0) n = 7 spa types

Others n = 170

t065 (CMRSA1)

2 (0.3)

2 (100.0)

9 (1.6)

4 (44.4)

3 (0.3)

2 (66.7)

Other CMRSA1 spa types

0 (0.0)

5 (55.6) n = 3 spa types

1 (33.3) (spa type t026)

t037 (CMRSA3/6)

11 (1.4)

11 (100.0)

2 (0.4)

2 (100.0)

6 (0.7)

6 (100.0)

CMRSA4 spa types

2 (0.3)

2 (100.0) n = 2 spa types

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)

CMRSA5 spa types

1 (0.1)

1 (100.0) (spa type t064)

1 (0.2)

1 (100.0) (spa type t064)

1 (0.1)

1 (100.0) (spa type t1476)

t022 (CMRSA8)

31 (4.0)

10 (32.2)

19 (3.4)

9 (47.4)

12 (1.4)

1 (8.3)

t6443 (CMRSA8)

14 (45.2)

3 (15.8)

2 (16.6)

Other CMRSA8 spa types

7 (22.6) n = 6 spa types

7 (36.8) n = 4 spa types

9 (75.0) n = 7 spa types

t019 (PFGE Not Assigned)

15 (1.9)

1 (6.7)

13 (2.4)

0 (0.0)

42 (4.7)

17 (40.5)

Other PFGE Not Assigned spa types

14 (93.3) n = 11 spa types

13 (100.0) n = 11 spa types

25 (59.5) n = 16 spa types

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Antimicrobial Resistance & Infection Control

ISSN: 2047-2994

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