Table 3.

Antibiotic susceptibilities of Staphylococcus aureus, Enterobacteriaceae and nonfermenting isolates from nasal swabs

Species	n	Susceptibility (%)a to:
PEN	AMP	OXA	CXM	CTX	MER	LEV	CIP	RIF	CLI	SXT	GEN
Staphylococcus aureus	768	35.7	—	98.0	—	—	—	98.4	—	100	90.0	99.6	98.8
Enterobacteriaceae
Klebsiella oxytoca	121	—	—	—	98.4	99.2	100	—	100	—	—	100	100
Escherichia coli	115	—	80.0	—	98.3	100	100	—	99.1	—	—	95.7	98.3
Proteus mirabilis	113	—	85.8	—	99.1	100	100	—	99.1	—	—	92.0	98.2
Citrobacter koseri	68	—		—	73.5	89.7	100	—	100	—	—	100	98.5
Pantoea agglomerans	58	—	69.0	—	91.4	100	100	—	100	—	—	100	100
Enterobacter aerogenes	48	—	—	—	100	100	100	—	100	—	—	100	100
Klebsiella pneumoniae	45	—	—	—	93.3	100	100	—	100	—	—	97.8	97.8
Citrobacter freundii	42	—	—	—	100	100	100	—	100	—	—	100	100
Enterobacter cloacae	26	—	—	—	65.4	100	100	—	100	—	—	100	100
Raoultella ornithinolytica	20	—	—	—	95.0	100	100	—	100	—	—	100	100
Serratia marcescens	18	—	—	—	11.1	100	100	—	100	—	—	100	88.9
Hafnia alvei	14	—	—	—	92.9	100	100	—	100	—	—	100	100
Morganella morganii	14	—	—	—	—	71.4	100	—	92.9	—	—	92.9	92.9
Serratia liquefaciens	10	—	—	—	—	100	100	—	100	—	—	100	10.0
Nonfermenting pathogens
Acinetobacter baumannii	21	—	—	—	—	—	100	—	100	—	—	—	100
Stenotrophomonas maltophilia	14	—	—	—	—	—	—	—	100	—	—	100	—
Pseudomonas putida	12	—	—	—	—	—	50.0	—	100	—	—	—	91.7

AMP, ampicillin; CIP, ciprofloxacin; CLI, clindamycin; CTX, cefotaxime; CXM, cefuroxime; GEN, gentamicin; LEV, levofloxacin; MER, meropenem; OXA, oxacillin/cefoxitin; PEN, benzylpenicillin; RIF, rifampicin; SXT, trimethoprim–sulfamethoxazole.

^aPercentage of susceptible isolates for the respective antibiotic. On species level, data are shown for those species for which the number of isolates tested was at least ten. Data are sorted in order of isolates tested for different groups of bacteria. If the same microorganism was isolated more than once from the same participant (at different study time points), only the first isolate was included in the calculation. Intermediate test results are counted as nonsusceptible. A dash indicates that antibiotic was not tested.