The World Health Organization said on Tuesday that it needs 5,000 additional health workers to help contain the Ebola outbreak ravaging the Democratic Republic of Congo, as the country's health system buckles under the weight of a rapidly worsening crisis. The outbreak, officially detected in mid-May, has spread to six provinces in the country's conflict-plagued east and northeast, killing more than 3,175 people among over 6,600 confirmed infections, according to official Congolese figures cited by the WHO. Health services in the affected regions lack sufficient staff and resources and have been...