Table 2.

Oxacillin MICs and LA test results after overnight induction with an oxacillin disc

SpeciesaNo. of isolates
TotalOxacillin MIC, ≤0.25 mg/literOxacillin MIC, ≥0.5 mg/literPositive LA test result
S. epidermidis
mecA+1530153153
mecA686800
S. haemolyticus
mecA +2502525
mecA6600
S. hominis
mecA +4704747
mecA333300
S. capitis subsp.capitis
mecA +0000
mecA8800
S. capitis subsp. urealyticus
mecA+6066
mecA4040
S. caprae
mecA+2022
mecA6060
S. cohnii
mecA+5055
mecA15015b 0
S. lugdunensis
mecA +0000
mecA190190
S. saprophyticus
mecA +2022
mecA190190
S. schleiferi
mecA +0000
mecA101000
S. simulans
mecA +5055
mecA532c 1
S. warneri
mecA+6066
mecA8170
S. xylosus
mecA+0000
mecA110110
Total463
mecA+2510251251
mecA212129831
  • a mecA +, mecA positive;mecA −, mecA negative.

  • b For one strain the oxacillin MIC was 4 mg/liter.

  • c The oxacillin MICs for one these strains were >4 mg/liter.