Africa CDC Director-General Jean Kaseya said the response was falling short, warning that contact tracing was no longer effectively containing the outbreak. Fastest-growing outbreak on recordThe outbreak has recorded 3,802 cases and 1,707 deaths since it was declared on May 15, making it the fastest-growing Ebola outbreak ever documented. Kaseya said it had already become the world's second-largest Ebola outbreak and, after just 14 weeks, had grown seven times faster than the 2014-2016 West African epidemic over the same period. Treatment capacity expandsKaseya and World Health Organization Regional Director for Africa Mohamed Janabi visited Bunia to inaugurate a new Ebola treatment centre. Efforts to contain the virus have been hampered by the inability to identify the index case, insecurity linked to armed conflict, population displacement and illegal mining activities, all of which have complicated contact tracing.