Antibiotic resistant E. coli P. aeruginosa Blood Pus Urine Tracheal aspirates Blood Pus Wound Tracheal aspirates OXA-1 1 2 1 1 2 3 1 3 OXA-2 1 - 2 2 - 2 1 1 OXA-10 2 2 2 2 3 7 4 6 OXA-23 1 1 - - 1 2 - 2 OXA-24 1 1 1 - 1 2 - 1 OXA-48 5 - 3 8 4 9 4 7 OXA-51 - 1 2 2 1 1 2 - OXA-58 - 1 1 3 - 1 2 1 Total 11 8 12 18 12 27 14 21

Table 3: Distribution of OXA variants among clinical specimens of E. coli and P. aeruginosa.