Microbiology Chloramphenicol resistance in Pseudomonas aeruginosa is due to: A Inactivation of the antimicrobial drug B Alteration of the antimicrobial target C Active efflux pumping out of the drug D Decreased permeability of the drug 💡 Explanation Chloramphenicol resistance in Pseudomonas aeruginosa is due to: ✓ Correct Answer: C. Active efflux pumping out of the drug