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Antibiograms

Sunnybrook Health Sciences Centre 

2023 Sunnybrook – Entire Hospital (Gram Positive and Gram Negative)

2023 Sunnybrook - Entire Hospital
Duplicate isolates within 30 days, surveillance and urine specimens excluded
Gram Positive Total Isolates % of isolates susceptible
Ampicillin Ceftriaxone Clindamycin Cloxacillin* Penicillin TMP/SMX Vancomycin
Coagulase Negative Staphylococci 31 60% 43% 64% 100%
Enterococcus faecalis 183 99% R R 99%
Enterococcus faecium 64 14% R R 79%
Staphylococcus aureus 973 79% 84% 98% 100%
MRSA 156 77% R 96% 100%
MSSA 816 79% 100% 98% 100%
Streptococcus pneumoniae 36 97% 92% 100
Viridans Streptococci 132 97% 85% 98%
*Staphylococci that test susceptible to cloxacillin are also susceptible to cefazolin

Gran Negative Total Isolates % of isolates susceptible
Amikacin Ampicillin Cefazolin Ceftazidime Ceftriaxone Ciprofloxacin Gentamicin Meropenem Piperacillin/tazobactam Tobramycin TMP/SMX
Enterobacter cloacae complex 138 100% R R   R 98% 100% 99% R 99% 96%
Escherichia coli 449 100% 43% 67%   75% 60% 86% 99% 74% 84% 72%
ESBL 111 99% R R   R 24% 77% 96% R 70% 46%
non ESBL 338 100% 57% 89%   98% 70% 88% 100% 94% 88% 81%
Klebsiella aerogenes 55 100% R R   R 88% 100% 91% R 98% 94%
Klebsiella oxytoca 59 100% R 61%   97% 98% 100% 100% 95% 100% 100%
Klebsiella pneumoniae 217 100% R 86%   90% 87% 97% 100% 88% 95% 91%
Proteus mirabilis 73 100% 85% 60%   100% 84% 96% 97% 99% 10% 84%
Pseudomonas aeruginosa 395   R R 83% R 85% R 84% 85% 99% R
Serratia marcescens 87 100% R R   95% 83% 100% 99% 100% 87% 100%
Stenotrophomonas maltophilia 62 R R R NA R   R R R R 98%

R = considered inherently resistant, NA = not available

2023 Sunnybrook – ICU (Gram Positive and Gram Negative)

2023 Sunnybrook - ICU
Duplicate isolates within 30 days, surveillance and urine specimens excluded
Gram Positive Total Isolates % of isolates susceptible
Ampicillin Clindamycin Cloxacillin TMP/SMX Vancomycin
Coagulase Negative Staphlylococci 91   45% 23% 41% 100%
Enterococcus spp. 77 73% R   R 89%
Staphylococcus aureus 155   77% 86% 99% 100%
MRSA^ 22   76% R 100% 100%
MSSA 133   77% 100% 98% 100%

^ Total number of isolates <30, interpret with caution
*Staphylococci that test susceptible to cloxacillin are also susceptible to cefazolin

Gram Negative Total Isolates % of isolates susceptible
Amikacin Ampicillin Cefazolin Ceftazidime Ceftriaxone Ciprofloxacin* Gentamicin Meropenem Piperacillin/tazobactam Tobramycin TMP/SMX
Enterobacter cloacae complex 41 100% R R   R 100% 100% 98% R 100% 100%
Escherichia coli 72 99% 37% 61%   69% 54% 78% 96% 64% 77% 83%
ESBL^ 20 100% R R   R 40% 75% 90% R 70% 60%
non ESBL 52 98% 52% 86%   96% 59% 80% 98% 86% 80% 92%
Klebsiella pneumoniae 48 100% R 87%   94% 94% 98% 100% 91% 96% 96%
Pseudomonas aeruginosa 95   R R 76% R 90% R 72% 80% 99% R
Serratia marcescens 40 100% R R   92% 72% 100% 98% 100% 92% 100%

^ Total number of isolates <30, interpret with caution
R = considered inherently resistant

2023 Sunnybrook – Urine (Gram Positive and Gram Negative)

2023 Sunnybrook Urine Antibiogram
Duplicate isolates within 30 days excluded
Gram Positive Total Isolates % of isolates susceptible              
Ampicillin Cloxacillin* Nitrofurantoin TMP/SMX Vancomycin
             
Enterococcus faecalis 718 100%   99% R 99%
Enterococcus faecium 85 13%   15% R 88%
Staphylococcus aureus 98   90% 99% 99% 100%

*Staphylococci that test susceptible to cloxacillin are also susceptible to cefazolin

Gram Negative Total Isolates % of isolates susceptible
Amikacin Ampicillin Cefazolin Ceftazidime Ceftriaxone Ciprofloxacin* Gentamicin Meropenem Nitrofurantoin Piperacillin/tazobactam Tobramycin TMP/SMX
Citrobacter freundii 60 100% R R   R 84% 92% 95% 93% R 90% 88%
Citrobacter koseri 62 100% R NA   100% 98% 100% 97% 44% na 98% 94%
Enterobacter cloacae complex 115 100% R R   R 96% 99% 100% 35% R 98% 88%
Escherichia coli 1745 100% 54% 76%   84% 66% 91% 100% 97% 88% 90% 77%
ESBL 275 100% R R   R 22% 78% 100% 93% R 75% 49%
non ESBL 1470 100% 64% 90%   99% 75% 93% 100% 98% 99% 93% 82%
Klebsiella aerogenes 52 100% R R   R 880% 100% 94% 53% R 98% 100%
Klebsiella oxytoca 104 99% R 49%   92% 95% 97% 97% 96% 90% 96% 94%
Klebsiella pneumoniae 472 100% R 84%   89% 82% 101% 99% 47% 96% 93% 104%
ESBL 49 100% R R   R 15% 65% 94% 29% R 49% 20%
non ESBL 423 100% R 94%   99% 90% 98% 99% 49% 99% 98% 91%
Morganella morganii 51 100% R R   94% 84% 92% 98% R NA 92% 76%
Proteus mirabilis 230 99% 86% 56%   98% 89% 89% 100% R 96% 90% 87%
Pseudomonas aeruginosa 267 100% R R 89% R 84% R 91%   90% 98% R
Serratia marcescens 33 97% R R   91% 91% 97% 97% R NA 85% 100%
R= Considered inherently resistant

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