Table 3

Summary of antibiotic susceptibility of the four most common microorganisms of IK in Nottingham, UK, during 2007–2019

AntibioticsP. aeruginosaS. aureusStreptococci sppCoNS
n (%)n (%)n (%)n (%)
Penicillin*0/1 (0.0%)89/90 (98.9)68/71 (95.8)61/73 (83.6)
Cefuroxime17/17 (100.0)4/4 (100.0)
Gentamicin†133/134 (99.3)90/90 (100.0)4/4 (100.0)68/73 (93.2)
Amikacin†133/133 (100.0)2/2 (100.0)
Ciprofloxacin‡133/134 (99.3)82/90 (91.1)66/73 (90.4)
Levofloxacin‡6/6 (100.0)39/39 (100.0)
  • The percentage shown refers to the antibiotic susceptibility rate of each microorganisms. Rate of resistance is equivalent to 100% minus the antibiotic susceptibility rate.

  • *Penicillin group includes penicillin, amoxicillin and flucloxacillin.

  • †Gentamicin and amikacin are aminoglycosides and usually one or the other was tested.

  • ‡Ciprofloxacin and levofloxacin are fluoroquinolone and usually one or the other was tested.

  • CoNS, coagulase-negative staphylococcus; IK, infectious keratitis.