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Microbiology Atlas

A SMALL INTRODUCTION INTO ANTIBIOTIC SUSCEPTIBILITY TESTING

Susceptibility of Escherichia coli to seven basic antibiotics

Disk diffusion test

E.coli susceptible strain

E.coli

Disk diffusion test

No: ESCO_1
E.coli susceptible strain

E.coli

Disk diffusion test

No: ESCO_2
E.coli resistant to ampicillin

E.coli

Disk diffusion test

No: ESCO_3
E.coli resistant to co-trimoxazole

E.coli

Disk diffusion test

No: ESCO_4
E.coli susceptible strain

E.coli

Susceptible strain

No: ESCO_1
E.coli susceptible strain

E.coli

Susceptible strain

No: ESCO_2
E.coli resistant to ampicillin

E.coli

Resistant to ampicillin

No: ESCO_3
E.coli resistant to co-trimoxazole

E.coli

Resistant to trimethoprim/sulfamethoxazole
(Co-trimoxazole)

No: ESCO_4
E.coli resistant to nitrofurantoin

E.coli

Disk diffusion test

No: ESCO_5
E.coli resistant to fluorochinolones

E.coli

Disk diffusion test

No: ESCO_6
E.coli resistant to ampicillin and co-trimoxazole

E.coli

Disk diffusion test

No: ESCO_7
E.coli resistant to ampicillin and ciprofloxacin

E.coli

Disk diffusion test

No: ESCO_8
E.coli resistant to nitrofurantoin

E.coli

Resistant to nitrofurantoin

No: ESCO_5
E.coli resistant to fluorochinolones

E.coli

Resistant to ciprofloxacin

No: ESCO_6
E.coli resistant to ampicillin and co-trimoxazole

E.coli

Resistant to
ampicillin
co-trimoxazole

No: ESCO_7
E.coli resistant to ampicillin and ciprofloxacin

E.coli

Resistant to
ampicillin
ciprofloxacin

No: ESCO_8
E.coli resistant to ampicillin and amoxicillin/clavulanate

E.coli

Disk diffusion test

No: ESCO_9
E.coli resistant to Trimethoprim-Sulfamethoxazole (Co-trimoxazole), TMP-SMX

E.coli

Disk diffusion test

No: ESCO_10
E.coli ESBL positive

E.coli

Disk diffusion test

No: ESCO_11
E.coli ESBL+

E.coli

Disk diffusion test

No: ESCO_12
E.coli resistant to ampicillin and amoxicillin/clavulanate

E.coli

Resistant to
ampicillin
amoxicillin/clavulanate

No: ESCO_9
E.coli resistant to Trimethoprim-Sulfamethoxazole (Co-trimoxazole), TMP-SMX

E.coli

Resistant to
trimethoprim/sulfamethoxazole
ciprofloxacin

No: ESCO_10
E.coli ESBL positive

ESBL-producing E.coli

Resistant to
ampicillin
cefuroxime
trimethoprim/sulfamethoxazole
ciprofloxacin

No: ESCO_11
E.coli ESBL+

ESBL-producing E.coli

Resistant to
ampicillin
amoxicillin/clavulanate
cefuroxime

No: ESCO_12
eucast link 1

Preparation of inoculum
eucast link 2

Inoculation
eucast link 3

Application of disks
eucast link 4

Reading of zones
E.coli ESBL positive, Augmentin susceptible

E.coli

Disk diffusion test
No: ESCO_13
AmpC positive

E.coli

Disk diffusion test
No: ESCO_14
AmpC positive

E.coli

Disk diffusion test
No: ESCO_15
AmpC positive

E.coli

Disk diffusion test
No: ESCO_16
E.coli ESBL+, augmentin susceptible

ESBL-producing E.coli

Resistant to
ampicillin
cefuroxime
ciprofloxacin

No: ESCO_13
E.coli AmpC positive

AmpC-beta-lactamase-producing E.coli

Resistant to
ampicillin
amoxicillin/clavulanate
cefuroxime

No: ESCO_14
E.coli

E.coli

Resistant to
ampicillin
trimethoprim/sulfamethoxazole
ciprofloxacin

No: ESCO_15
E.coli

E.coli

Resistant to
ampicillin
trimethoprim/sulfamethoxazole
ciprofloxacin
nitrofurantoin

No: ESCO_16
ESBL positive

E.coli

Disk diffusion test
No: ESCO_17
ESBL positive

E.coli

Disk diffusion test
No: ESCO_18
ESBL positive

E.coli

Disk diffusion test
No: ESCO_19
ESBL positive

E.coli

Disk diffusion test
No: ESCO_20
E.coli

ESBL-producing E.coli

Susceptible to
trimethoprim/sulfamethoxazole
ciprofloxacin

No: ESCO_17
E.coli ESBL

ESBL-producing E.coli

Susceptible to


fosfomycin
nitrofurantoin

No: ESCO_18
E.coli ESBL

E.coli

Resistant to


fosfomycin
nitrofurantoin

No: ESCO_19
E.coli ESBL
ESBL-producing E.coli

No: ESCO_20
inoculated Petri dish with antibiotic disks

Inoculated plate
ESBL E.coli

ESBL

E.coli
interpretation

Interpretation
antibiotic structure

Per os (p.o.)
antibiotics

For
Enterobacterales

inoculated Petri dish with antibiotic disks overnight cultivation

Overnight cultivation
E.coli ESBL

ESBL

E.coli
reading zones

Reading of zones
antibiotic structure2

Intravenous (i.v.)
antibiotics

For
Enterobacterales

 

Susceptibility of Pseudomonas aeruginosa

Disk diffusion test

p.aeruginosa antibiotic testing

P.aeruginosa

Be added
soon
p.aeruginosa antibiotic testing

P.aeruginosa

Be added
soon
p.aeruginosa antibiotic testing

P.aeruginosa

Be added
soon
p.aeruginosa antibiotic testing

P.aeruginosa

Be added
soon
p.aeruginosa antibiotic testing

P.aeruginosa

Be added
soon
p.aeruginosa antibiotic testing

P.aeruginosa

Be added
soon
p.aeruginosa antibiotic testing

P.aeruginosa

Be added
soon
p.aeruginosa antibiotic testing

P.aeruginosa

Be added
soon