WHO says new drugs urgently needed to fight 12 'priority pathogens'

By Kate KellandLONDON (Reuters) - New antibiotics must be developed urgently to fight a dozen dangerous families of bacteria, the World Health Organization said on Monday, describing these "priority pathogens" as the greatest threats to human health.Many of these bacteria have already evolved into deadly superbugs that are resistant to many antibiotics, the United National health agency said.The WHO's assistant director-general for health systems and innovation, Marie-Paule Kieny, said it was up