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Table 1 Differences in methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-susceptible S. aureus (MSSA) colonization in 101 healthy US military personnel in the US and 100 US military personnel deployed to Afghanistan

From: Staphylococcus aureus colonization of healthy military service members in the United States and Afghanistan

  MRSA MSSA
Demographics  US  Afghan  Total  US  Afghan T otal
 Number of personnel (isolates)  4 (4) 4 (6)  8 (10) 40 (71) 32 (65) 72 (136)
 Age median (IQR) 24 (24,25) 23 (22,23) 23 (23,24) 21 (20,25) 23 (22,26) 22 (21,25)
 Gender – males% 50 100 75 69 100 84
 Operations off the military basea    4  4   25 25
Location of isolate colonization       
 Nares    2  2 15 24 39
 Oropharynx  3  2  5 25 16 41
 Axilla     0  4  4  8
 Groin     0  7  6 13
 Hand    1  1  4  6 10
 Foot    1  1  8  9 17
 Perirectal  1    1  8    8
Number of sites colonized by subject b       
 1  4  2  6 21  15 36
 2    2  2  9  8 17
 3     0  7  4 11
 4     0  3  3  6
 5     0  0  2  2
Personnel co-colonized at multiple sites       
 Nares and oropharynx    1  1  2  6  8
 Nares and hand      1    1
 Nares and axilla       1  1
 Nares and groin      2  1  3
 Nares and perirectal      1    1
 Hand and foot    1  1    
 Oropharynx and perirectal      1    1
 Oropharynx and foot      1    1
 Groin and hand      1    1
 Nares, oropharynx and groin      1  1  2
 Nares, oropharynx and perirectal      1  1  2
 Nares, axilla and perirectal      1    1
 Nares, groin and foot      1  1  2
 Nares, oropharynx and foot      1  1  2
 Nares, oropharynx and hand      1  1  2
 Axilla, groin, foot and perirectal      1    1
 Nares, oropharynx, axilla and foot      1    1
 Nares, oropharynx, groin and foot      1    1
 Nares, hand, groin and foot       1  1
 Nares, oropharynx, axilla and hand       1  1
 Nares, oropharynx, hand and foot       1  1
 Nares, oropharynx, axilla, hand and foot       1  1
 Nares, oropharynx, axilla, groin and foot       1  1
  1. aOnly Afghanistan personnel eligible.
  2. bp-value <0.01 – Comparing MSSA and MRSA sites of colonization in all study personnel.