The WHO director-general called the declining efficacy of antibiotics a "security threat."
It's not as simple as reducing the nation's massive antibiotic consumption.
Bacteriophages -- viruses found in soil, water and human waste -- may be the cure in a post-antibiotic world.
In a new report, the WHO identified pathogens they are particularly worried about.
Antibiotic-resistant bacteria have become a global health threat.