Is the ability of a microorganism to stop an antimicrobial (antibiotics or antivirals) from working against it.
Results in standard treatments becoming ineffective
Results in infections remaining persistent.

Basic Microbiology For Infection Prevention And Control
Standard Precautions
Environmental Cleaning
Waste Management And Sharp Safety
Linen Management & Laundry.
Cleaning Patients Equipment
Occupational Health
Cough Etiquette & Patient Placement
Risk Management
Transmission-Based Precautions