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Table 1 S. aureus isolates with and without different types of rearrangement in the spa -gene in community and inpatient samples: formerly non-typeable isolates

From: Prevalence of Staphylococcus aureus protein A (spa) mutants in the community and hospitals in Oxfordshire

Group

Community1

Hospital2

 

Isolates

Individuals

Isolates

Individuals

 

no.

%

no.

%

no.

%

no.

%

Total

3,905

100%

442

100%

2,205

100%

1,273

100%

Pure without deletions/insertions or with hidden deletions3

3647

93.4%

334

75.6%

2055

93.2%

1150

90.3%

Mixed with or without deletions and/or rearrangements4

258

6.6%

108

24.4%

150

6.8%

123

9.7%

Formerly non-typeable: i.e. pure with rearrangements affecting standard spa-typing

72

1.8% (from total)

8

1.8% (from total)

14

0.6% (from total)

9

0.7% (from total)

  

27.9% (from 12 picks)

 

7.4% (from12 picks)

 

9.3% (from 12 picks)

 

7.3% (from 12 picks)

  1. 1 – nasal swabs collected from individuals recruited in 5 GP practices in Oxfordshire.
  2. 2 – nasal swabs from individuals admitted to the adult ITU, Gerontology and Trauma wards of the Oxford University Hospitals NHS Trust.
  3. 3 – indicates where all samples from an individual were pure using our spa-typing protocol (i.e. were without deletions/insertions or only with hidden deletions) versus any sample did not fall into this category.
  4. 4 –subjected to 12 single colony picks, i.e. 12 sub-colonies analysed from each sample.