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Table 2 Panels of drug non-susceptibility in multiple drug resistant (MDR) and extensive drug resistant (XDR) Haemophilus influenzae isolates

From: Extensively drug-resistant Haemophilus influenzae – emergence, epidemiology, risk factors, and regimen

 Penicillinβ-lactam combination agentPhenicolCephemFluoroquinoloneFolate pathway antagonist 
AmpicillinAmoxicillin-clavulanateChloramphenicolCefotaximeCefuroximeLevofloxacinTrimethoprim-sulfamethoxazolen
MDRV V   V190
V V  VV83
VV    V81
VVV   V43
VV  V V26
VV   VV25
VV  V  24
V    VV14
VV VV V14
VV VV  7
  V  VV6
VV V   6
V   VVV6
V V  V 5
VV V  V5
VVV    4
    VVV3
V V V  3
V   V V3
V V V V3
V  V  V2
VV   V 2
V   VV 1
VVVVV  1
XDRVV  VVV12
VVV V V11
VVV  VV9
VVV VVV8
VV VVVV6
VVVVV V3
V V VVV1
VVVV  V1
VV V VV1
  1. Multiple drug resistant (MDR) is defined as acquired non-susceptibility to at least one agent in three of five antimicrobial categories or non-susceptibility to at least one agent in four of five antimicrobial categories but less than five antimicrobial agents. Extensive drug resistant (XDR) is defined as acquired non-susceptibility to at least one agent in four of five antimicrobial categories and at least five antimicrobial agents