The rise of resistance
As bacteria fights back, the antibiotic war is far from over
A mixed army
Each bacterium in a colony is slightly different – some are naturally a little harder to kill than others.
The strong remain
Antibiotics kill or inactivate the weakest bacteria first, thereby leaving the stronger bacteria behind.
Share to survive
The offspring of the surviving bacteria inherit the genes that make them harder to kill.
Bacteria can share genes, allowing them to pass antibiotic resistance to other species.