<prompt> Drug active against New Delhi beta lactamase producing strains of bacteria is:MeropenemColistinCephalosporinsPenicillins  <response>: New Delhi Metallo lactamase bacteria are susceptible to colistin. Penicillinase Resistant Penicillin : Cloxacillin Oxacillin Nafcillin Dicloxacillin Ofloxacillin Methicillin Extended Spectrum b Lactamase bacteria are sensitive to carbapenems. 