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The World Health Organization (WHO) has developed a simplified algorithm specific to resource-limited settings for the treatment of severe sepsis emphasizing early fluids and antibiotics. However, this protocol's clinical effectiveness is unknown. We describe patient outcomes before and after implementation of an adapted WHO severe sepsis protocol at a community hospital in Haiti.Using a before-and-after study design, we retrospectively enrolled 99 adult Emergency Department patients with severe sepsis from January through March 2012. After protocol implementation in January 2014, we compared outcomes to 67 patients with severe sepsis retrospectively enrolled from February to April 2014. We defined sepsis according to the WHO's Integrated Management of Adult Illness guidelines and severe sepsis as sepsis plus organ dysfunction.After protocol implementation, quantity of fluid administered increased and the physician's differential diagnoses more often included sepsis. Patients were more likely to have follow-up vital signs taken sooner, a radiograph performed, and a lactic acid tested. There were no improvements in mortality, time to fluids or antimicrobials.Use of a simplified sepsis protocol based primarily on physiologic parameters allows for substantial improvements in process measures in the care of severely septic patients in a resource-constrained setting.The WHO's severe sepsis algorithm emphasizes early fluids and antibiotics.However, this protocol's clinical efficacy in a real-world setting is unknown.We describe patient outcomes after implementation of an adapted WHO severe sepsis protocol in Haiti.Post-protocol, quantity of fluids given increased and the physician's differential diagnoses more often included sepsis.Post-protocol patients had follow-up vital signs taken sooner, a radiograph performed, and a lactic acid tested.There were no improvements in mortality, time from triage to fluids or antimicrobials.