Table 4.

MIC and susceptibility results for S. pyogenes (India only)

Susceptibility
MIC (mg/L)
CLSI
PK/PD
EUCAST
Antimicrobialn50%90%minmax%S%I%R%S%S%I%R
India
 AMCa780.030.25≤0.0151100b0.00.0100 (100)100b0.00.0
 azithromycin7864>2560.12>256NANANANANANANA
 cefixime780.250.50.0332100b0.00.098.7100b0.00.0
 cefpodoxime780.030.03≤0.0154100b0.00.098.7100b0.00.0
 cefuroxime78≤0.0150.03≤0.0151100b0.00.0100100b0.00.0
 clarithromycin7832>2560.06>256NANANANANANANA
 erythromycinc7616>2560.06>25623.77.968.4NANANANA
 levofloxacin781>320.5>3279.59.011.579.555.124.420.5
 ofloxacin782>321>3252.624.423.1NANANANA
 penicillin780.0150.03≤0.0150.121000.00.0NA1000.00.0
 SXT78>32>32≤0.015>32NANANA33.333.30.066.7
 erythromycind7821.87.770.521.83.874.4
Susceptibility
MIC (mg/L)
CLSI
PK/PD
EUCAST
Antimicrobialn50%90%minmax%S%I%R%S%S%I%R
India
 AMCa780.030.25≤0.0151100b0.00.0100 (100)100b0.00.0
 azithromycin7864>2560.12>256NANANANANANANA
 cefixime780.250.50.0332100b0.00.098.7100b0.00.0
 cefpodoxime780.030.03≤0.0154100b0.00.098.7100b0.00.0
 cefuroxime78≤0.0150.03≤0.0151100b0.00.0100100b0.00.0
 clarithromycin7832>2560.06>256NANANANANANANA
 erythromycinc7616>2560.06>25623.77.968.4NANANANA
 levofloxacin781>320.5>3279.59.011.579.555.124.420.5
 ofloxacin782>321>3252.624.423.1NANANANA
 penicillin780.0150.03≤0.0150.121000.00.0NA1000.00.0
 SXT78>32>32≤0.015>32NANANA33.333.30.066.7
 erythromycind7821.87.770.521.83.874.4

min, minimum; max, maximum; S, susceptible; I, intermediate; AMC, amoxicillin/clavulanic acid; NA, no breakpoint data available (NA for macrolides by EUCAST or PK/PD because Etest® breakpoints in CO2 not available); SXT, trimethoprim/sulfamethoxazole.

aPK/PD susceptibility at high dose is shown in parentheses.

bCLSI and EUCAST guidelines assumes susceptibility to amoxicillin/clavulanic acid and cephalosporins based on penicillin susceptibility.

cbioMérieux Etest® breakpoints for incubation in CO2.

dUsing S/I/R zone diameters (mm) of CLSI (≤15/16–20/≥21) and EUCAST (≤18/19–21/≥22).

Table 4.

MIC and susceptibility results for S. pyogenes (India only)

Susceptibility
MIC (mg/L)
CLSI
PK/PD
EUCAST
Antimicrobialn50%90%minmax%S%I%R%S%S%I%R
India
 AMCa780.030.25≤0.0151100b0.00.0100 (100)100b0.00.0
 azithromycin7864>2560.12>256NANANANANANANA
 cefixime780.250.50.0332100b0.00.098.7100b0.00.0
 cefpodoxime780.030.03≤0.0154100b0.00.098.7100b0.00.0
 cefuroxime78≤0.0150.03≤0.0151100b0.00.0100100b0.00.0
 clarithromycin7832>2560.06>256NANANANANANANA
 erythromycinc7616>2560.06>25623.77.968.4NANANANA
 levofloxacin781>320.5>3279.59.011.579.555.124.420.5
 ofloxacin782>321>3252.624.423.1NANANANA
 penicillin780.0150.03≤0.0150.121000.00.0NA1000.00.0
 SXT78>32>32≤0.015>32NANANA33.333.30.066.7
 erythromycind7821.87.770.521.83.874.4
Susceptibility
MIC (mg/L)
CLSI
PK/PD
EUCAST
Antimicrobialn50%90%minmax%S%I%R%S%S%I%R
India
 AMCa780.030.25≤0.0151100b0.00.0100 (100)100b0.00.0
 azithromycin7864>2560.12>256NANANANANANANA
 cefixime780.250.50.0332100b0.00.098.7100b0.00.0
 cefpodoxime780.030.03≤0.0154100b0.00.098.7100b0.00.0
 cefuroxime78≤0.0150.03≤0.0151100b0.00.0100100b0.00.0
 clarithromycin7832>2560.06>256NANANANANANANA
 erythromycinc7616>2560.06>25623.77.968.4NANANANA
 levofloxacin781>320.5>3279.59.011.579.555.124.420.5
 ofloxacin782>321>3252.624.423.1NANANANA
 penicillin780.0150.03≤0.0150.121000.00.0NA1000.00.0
 SXT78>32>32≤0.015>32NANANA33.333.30.066.7
 erythromycind7821.87.770.521.83.874.4

min, minimum; max, maximum; S, susceptible; I, intermediate; AMC, amoxicillin/clavulanic acid; NA, no breakpoint data available (NA for macrolides by EUCAST or PK/PD because Etest® breakpoints in CO2 not available); SXT, trimethoprim/sulfamethoxazole.

aPK/PD susceptibility at high dose is shown in parentheses.

bCLSI and EUCAST guidelines assumes susceptibility to amoxicillin/clavulanic acid and cephalosporins based on penicillin susceptibility.

cbioMérieux Etest® breakpoints for incubation in CO2.

dUsing S/I/R zone diameters (mm) of CLSI (≤15/16–20/≥21) and EUCAST (≤18/19–21/≥22).

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