Information about recent incidents and outbreaks of Ebola and Marburg, both viral haemorrhagic fevers (VHF), in Africa, Europe and the US, including maps.
Recent incidents and outbreaks
On 14 January 2016, WHO declared the end of the most recent outbreak of Ebola virus disease in Liberia. While this represented the first time during this longstanding outbreak that all known chains of transmission in West Africa were stopped, it was recognised that further flare-ups are to be expected. Robust surveillance and response systems remain vitally important.
On 29 December 2015, WHO declared the end of Ebola virus transmission in the Republic of Guinea. The country now enters a 90-day period of heightened surveillance for new cases.
On 19 November 2015, confirmed Ebola was again reported in Liberia, the first in a small family cluster of 3 cases.
On 7 November 2015, WHO declared that Sierra Leone was free from Ebola virus transmission. The country is currently within the 90 day period of enhanced surveillance.
On 3 September 2015, WHO declared that Liberia was free from Ebola virus transmission following success tackling its second outbreak.
On 29 June 2015, Liberia reported a recurrence of Ebola cases after a disease free period of 13 weeks.
On 12 May 2015, Italy reported a confirmed Ebola case in a healthcare worker who had returned from Sierra Leone.
On 29 December 2014, the UK reported its first imported case of Ebola in a healthcare worker returning from Sierra Leone.
On 5 October 2014, the Ministry of Health in Uganda reported that a case of Marburg virus disease had been confirmed in Kampala. No further cases were confirmed, and WHO declared the country free of Marburg on 13 November 2014.
On 27 August 2014, WHO announced a new Ebola outbreak in Equateur Province, north western Democratic Republic of Congo. This was unrelated to the West African outbreak. A total of 66 cases were reported, and WHO declared the outbreak to be over on 21 November 2014.
On 23 March 2014, WHO confirmed an outbreak of Ebola virus disease in southeastern Guinea.
This was the first time an outbreak had been diagnosed in this part of Africa. The outbreak spread to neighbouring and nearby countries, particularly Liberia and Sierra Leone, and has been the largest known outbreak of this disease.
This was the first country affected in the West Africa outbreak and much of the country has been affected since March 2014. During 2015, transmission occurred in gradually contracting geographical areas, and by 23 December 2015 no cases had been confirmed for 7 weeks. On 29 December 2015, WHO declared Guinea free of Ebola virus transmission.
Cases of Ebola virus disease were first confirmed in northern Liberia on 30 March 2014 and extensive local transmission followed. All areas of the country reported cases, but case incidence dramatically declined in 2015 and Liberia was declared free of EVD on 9 May 2015. A second outbreak occurred at the end of June 2015 after the country had been free from cases for thirteen weeks. This resulted in a cluster of 6 cases. Liberia was declared free of Ebola virus transmission for the second time on 3 September 2015. A third cluster of 3 cases was reported in November 2015. Transmission associated with this cluster was declared over on 14 January 2016.
On 26 May 2014, the first case in Sierra Leone was confirmed. Every district in the country was subsequently affected. However, during 2015 areas of transmission gradually contracted and weekly case numbers have declined to zero. Sierra Leone was declared free of Ebola virus transmission on 7 November 2015, and is currently within the 90 day period of enhanced surveillance.
On 23 October 2014, Mali reported a single imported case of Ebola in a child who had travelled from Guinea. No further cases occurred amongst contacts.
On 12 November 2014, Mali reported a second case imported from Guinea, and a cluster of cases was subsequently identified in Bamako, the capital. This imported case was reclassified by WHO as a Guinea case. Seven contacts subsequently developed Ebola, bringing the overall total number of cases in Mali to 8.
WHO declared Mali to be free of Ebola virus disease on 18 January 2015.
Nigeria reported 20 cases in Lagos and Port Harcourt, following an initial importation from Liberia. WHO declared Nigeria to be free of Ebola virus disease on 20 October 2014.
Senegal announced a single case imported from Guinea on 29 August 2014. WHO declared that Senegal was free of Ebola virus disease on 17 October 2014.
On 12 May 2015, Italy reported its first EVD case. The patient was a healthcare worker who had returned from volunteering at an Ebola treatment centre in Sierra Leone, and developed symptoms 72 hours after arriving in Italy. The patient recovered, and Italy was declared EVD free on 20 July 2015.
On 6 October 2014, Spain reported a confirmed case in a healthcare worker WHO had been involved in the care of patients repatriated from West Africa. WHO reported that the outbreak in Spain was over on 2 December 2014.
On 29 December 2014, a laboratory-confirmed case of EVD was reported in Scotland. This was the first Ebola case to be detected in the UK. The patient was a healthcare worker who had returned from Sierra Leone where they had been working in an Ebola treatment centre. They recovered and the UK was declared free of Ebola virus disease on 7 March 2015. In October 2015, this patient was readmitted to hospital for complications of their Ebola infection.
A single case was confirmed to have been imported from Liberia into Dallas, Texas on 30 September 2014. Transmission of Ebola virus disease from that patient to a healthcare worker was confirmed on 12 October 2014, and to a second healthcare worker on 15 October 2014. A further case of Ebola was confirmed in a humanitarian aid worker who returned from Guinea on 23 October 2014.
Historic map of outbreaks
This map includes all cases and outbreaks of Ebola or Marburg documented to 31 December 2014.