2.1 Intrinsic resistance
Intrinsic resistance may occur because bacteria lack the target for a particular antibiotic or because the drug can’t get to its target. It reduces the pool of antibiotics available to treat infections. In addition, as you will see in Week 4, resistance elements that are intrinsic to one bacterial type can be transferred to another one. In this way, intrinsic antibiotic resistance in non-pathogenic bacteria (like the ones you saw in Video 1) can be transferred to a pathogenic bacterium where it can restrict the treatment options for infections caused by these bacteria.