The Charles T. Campbell Eye Microbiology Lab
UPMCUniversity of Pittsburgh Schools of the Health Sciences
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Antibiotic Susceptibility: Conjunctivitis & Blepharitis


Susceptibility* of Bacterial Isolates from Conjunctivitis and Blepharitis to Common Antibiotics
(Percent Susceptible) (1993 to Jan 1, 2017)
Bacteria
#
BAC
ERY
GEN
CIP
OFX
TRI
PB
TOB
SULF
AZITH
METH
GAT MOX
Staphylococcus aureus 524 92 59 95 80 80 94 2 84 95 47
(116)
60
(128)
80
(205)
82
(205)
Coag-Neg Staphylococcus 195 89 36 83 66 65 68 41 75 82 26
(23)
-- 53
(36)
53
(36)
Streptococcus pneumoniae 251 99 87 13 99 99 56 1 1 96 74
(38)
-- 100
(74)
100
(74)
Haemophilus species 242 1 76 96 100 100 87 100 95 70 93
(31)
-- 100
(72)
100
(72)
Moraxella species 20 78 94 100 100 100 11 100 94 100 -- -- 100
(5)
100
(5)
Acinetobacter species 19 37 61 100 100 100 11 100 100 100 -- -- 100
(5)
100
(5)
Other Gram-Positives 97 97 56 63 77 82 51 28 33 54 39
(18)
-- 83
(46)
83
(46)
Other Gram-Negatives 159 21 23 95 98 97 48 72 91 73 31
(16)
-- 97
(59)
93
(59)
 
* Disk diffusion susceptibilities based on CLSI/NCCLS serum standards.

BAC=Bacitracin; ERY=Erythromycin; GEN=Gentamicin; CIP=Ciprofloxacin; OFX=Ofloxacin; TRI=Trimethoprim; PB=Polymyxin B; TOB=Tobramycin; SULF=Sulfisoxazole; AZITH=Azithromycin; METH=Methicillin; GAT=Gatifloxacin; MOX=Moxifloxacin; (--)=not done;
(#) for AZITH, GAT and MOX= # isolates tested.

 

Susceptibility* of Gram Negative Isolates from Conjunctivitis/Blepharitis to Common Antibiotics
(Percent Susceptible)(1993 to January 1, 2017)
Bacteria
#
GEN CIP OFX PB TOB SULF GAT MOX
Achromobacter xylosoxidans 3 0 100 100 100 0 100 100 100
Achromobacter species 1 100 100 100 100 100 100 -- --
Citrobacter (diversus) koseri 1 100 100 100 100 100 100 -- --
Citrobacter freundii 1 100 100 100 100 100 100 -- --
Chryseobacterium indologenes 2 100 100 100 50 0 0 -- --
Chryseomonas species 1 100 100 100 100 0 0 100 100
Citrobacter koseri 1 100 100 100 100 100 0 100 100
Delftia (Comamonas) acidovorans 1 0 100 100 100 100 100 100 100
Enterobacter aerogenes 2 100 100 100 100 100 100 100(1) 100(1)
Enterobacter agglomerans 3 100 100 100 100 100 100 -- --
Enterobacter cloacae 4 100 100 100 100 100 100 100(2) 100(2)
Escherichia coli 6 83 83 83 100 83 83 67(3) 67(3)
Eikenella corrodens 3 100 100 100 100 67 67 100(2) 100(2)
Klebsiella oxytoca 7 100 100 100 100 100 100 100(1) 100(1)
Klebsiella pneumoniae 6 100 100 100 100 100 100 100(1) 100(1)
Moraxella (Branhamella) catarrhalis 18 100 100 100 94 100 100 100(5) 100(5)
Neisseria meningitidis 7 57 100 100 0 71 100 100(4) 100(4)
Neisseria mucosa 1 100 100 100 100 100 100 -- --
Neisseria species 1 100 100 100 100 100 100 -- --
Ochrobactrum anthropi 2 100 50 50 100 100 50 -- --
Pseudomonas aeruginosa 32 84 97 91 97 94 3 93(15) 86(15)
Pseudomonas fluorescens 1 100 100 100 100 100 0 100 100
Pseudomonas vesicularis 1 100 100 100 100 100 0 -- --
Proteus mirabilis 20 100 100 100 0 95 89 100(4) 100(4)
Pasteurella multocida 1 100 100 100 100 0 100 -- --
Providencia stuartii 1 100 100 100 0 100 100 -- --
Serratia liquefaciens 3 100 100 100 67 100 67 100(1) 100(1)
Serratia marcescens 16 100 100 100 12 88 31 100(5) 100(5)
Serratia rubidaea 2 100 100 100 50 100 100 -- --
Serratia species 1 100 100 100 100 100 100 -- --
Stenotrophomonas maltophilia 5 60 60 80 100 60 100 67(3) 67(3)
 
* Disk diffusion susceptibilities based on CLSI/NCCLS serum standards.
GEN=Gentamicin; CIP=Ciprofloxacin; OFX=Ofloxacin; PB=Polymyxin B; TOB=Tobramycin; SULF=Sulfisoxazole; GAT=Gatifloxacin; MOX=Moxifloxacin; (--)=not done;
(#) for GAT and MOX= # isolates tested.

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