Many sewage treatment plants are not equipped for the advanced treatment of human waste – but this is where bacteria resistant to antibiotics in our body collect, and muster.
A British government report estimates that about 700,000 people worldwide currently die annually due to antibiotic-resistant infections.
MRSA develops resistance fast enough to keep specialists developing more effective antibiotics, and it is worrying that international travellers may be carrying the bacterium around.
With great confidence and supposed vision, we decided that infectious diseases were a done deal, and research funding for these areas were curtailed. Unfortunately, we did not factor in evolution.