A group set up by Nelson Mandela known as the Elders met in Kenya to model a health emergency – and found much still needs to be done, as the subsequent Ebola outbreak has shown A group set up by Nelson Mandela known as the Elders met in Kenya to model a health emergency – and found much still needs to be done, as the subsequent Ebola outbreak has shown A bout a dozen people sat around a boardroom table at the emergency hub of the World Health Organization (WHO) just outside Nairobi last