A report published on 1 May indicates that the Ebola virus can persist in seminal fluid of a person who recovered from Ebola virus disease for longer than previously known and can potentially lead to sexual transmission of Ebola virus.

ECDC comments on two studies published on 14 October 2015 in the New England Journal of Medicine provide insights into sexual transmission of Ebola virus and the duration of virus persistence in semen.

​An outbreak of Ebola haemorrhagic fever in Guinea, West Africa, with onset in early February 2014 is rapidly evolving. The first cases were reported from the Forested Region of south-eastern Guinea. ECDC published a Rapid Risk Assessment of the outbreak on 23 March at which time 80 cases including 59 deaths (CFR: 74%) had been reported.

​The risk of infection for tourists, visitors and residents of the affected areas is considered very low if proper precautions are taken, concludes the ECDC Rapid Risk Assessment on the outbreak of Ebola virus disease (EVD) in West Africa. These measures include avoiding contact with symptomatic patients and/or their body fluids, or with deceased patients and/or their body fluids. Generic precautions for travelling to West African countries also apply to preventing infections with the Ebola virus.

​On 20 November 2015, the Liberian Ministry of Health and Social Welfare reported three confirmed cases of Ebola virus disease.

​An outbreak of Ebola Virus Disease (EVD) with onset in December 2013 continues to evolve in the two West African countries of Guinea and Liberia. The first cases were reported from Guéckédou prefecture, a forested region of south-eastern Guinea near the border with Liberia and Sierra Leone. The alert was sent to the Ministry of Health on 10 March 2014. This is the first such outbreak in this region.

​An outbreak of Ebola virus disease (EVD) with onset in December 2013 is still evolving in Guinea. The first cases were reported from Guéckédou prefecture, a forested region of south-eastern Guinea near the border with Liberia and Sierra Leone. The alert was issued by the Ministry of Health on 10 March 2014.

​An outbreak of Ebola Virus Disease (EVD) with onset in December 2013 is still evolving in Guinea and recently spread to Sierra Leone. The first cases were reported from Guéckédou prefecture, a forested region of south-eastern Guinea near the border with Liberia and Sierra Leone. The alert was sent to the Ministry of Health of Guinea on 10 March 2014.

New cases are still notified in the past four weeks despite efforts to control the outbreak. WHO and international organizations are closely supporting the Ministry of Health of Guinea (MOH Guinea), Ministry of Health & Social Welfare of Liberia (MOHSW Liberia) and Ministry of Health and Sanitation of Sierra Leone (MOHS Sierra Leone) in their EVD prevention, contract tracing, health care and control related activities.

​An outbreak of Ebola Virus Disease with onset in December 2013 is still evolving in Guinea, Liberia and Sierra Leone. The largest increase in cases since the previous ECDC update was in Sierra Leone.