| 17 Janvier 2015
Geneva- One year after the first Ebola cases started to  surface in Guinea, WHO is publishing this series of 14 papers that take  an in-depth look at West Africa’s first epidemic of Ebola virus  disease.The papers explore reasons why the disease evaded detection for several  months and the factors, many specific to West Africa, that fuelled its  subsequent spread.
 
 The most extensive papers trace events in each of the three most  severely affected countries – Guinea, Liberia and Sierra Leone. These  countries shared many common challenges, shaped by geography, culture,  and poverty, but each also faced, addressed and sometimes solved some  unique problems.
 
 Key events are set out chronologically, starting with the child who is  believed to be the index case of this epidemic through to the  Director-General’s commitment to steadfastly support affected countries  until they reach zero cases.
 
 The report also looks back at WHO’s response over the past 12 months,  including the 9 August declaration of an international health emergency.  It documents the many challenges faced by countries and the  international community in dealing with the largest, longest, most  severe, and most complex Ebola outbreak in history.
 
 Throughout the report, the contributions of national governments and  their many partners weave in, as does the great human misery caused by a  terrible and terrifying disease.
 
 Other papers provide insight into:
 The report also looks ahead. Based on what was learned during the  previous year, what critical strategies and interventions will give  countries and their partners the best chance of bringing the outbreaks  under control?
 
 Read the report here.