Centers for Disease Control and Prevention (CDC): Think Ebola: Early recognition: Infographic for health care providers approaching a patient who may have Ebola CDC: Sequence for Donning and Removing Personal Protective Equipment World Health Organization (WHO): Outbreaks and Emergencies Bulletin WHO: Interim Infection Prevention and Control Guidance for Care of Patients with Suspected or Confirmed Filovirus Haemorrhagic Fever in Health-Care Settings, with Focus on Ebola, December 2014