Sudan Ebola virus in Uganda, 2011. A) Geographic locations of Nakisimata village and Bombo Military Hospital with the isolation facility established by Médecins Sans Frontières (MSF) relative to locations where Sudan Ebola virus (SEBOV) was isolated during the current and previous outbreaks in Uganda. Scale bar indicates kilometers. B) Maximum likelihood tree obtained from full length sequences of SEBOV strains Nakisamata (JN638998), Boniface (FJ968794), Gulu (AY729654), and Yambio (EU338380) and the polymerase gene (*) of Maleo (U23458); full-length Reston Ebola virus (REBOV) (AY769362) is included as an outgroup. Bootstrap values listed at the nodes provide statistical support for 1,000 replicates. Scale bar indicates 0.006 substitutions per site.

Timeline of Sudan Ebola virus outbreak, Uganda 2011, showing key events in the investigation and response. Also shown are the dates on which EHF was ruled out in other suspected cases by laboratory testing at the CDC/UVRI laboratory in Entebbe. EHF, Ebola hemorrhagic fever; CDC/UVRI, US Centers for Disease Control and Prevention, Uganda/Uganda Virus Research Institute Collaborative Laboratory; CDC, US Centers for Disease Control and Prevention; MSF, Médecins Sans Frontières.