Lassa fever, also known as Lassa hemorrhagic fever, is a type of viral hemorrhagic fever caused by the Lassa virus. Many of those infected by the virus do not develop symptoms. When symptoms occur they typically include fever, weakness, headaches, vomiting, and muscle pains. Less commonly there may be bleeding from the mouth or gastrointestinal tract. The risk of death once infected is about one percent and frequently occurs within two weeks of the onset of symptoms. Of those who survive, about a quarter have hearing loss, which improves within three months in about half of these cases.
The Sierra Leone national football team represents Sierra Leone in association football and is governed by the Sierra Leone Football Association. It has qualified for Africa Cup of Nations three times.
Lassa mammarenavirus (LASV) is an arenavirus that causes Lassa hemorrhagic fever, a type of viral hemorrhagic fever (VHF), in humans and other primates. Lassa mammarenavirus is an emerging virus and a select agent, requiring Biosafety Level 4-equivalent containment. It is endemic in West African countries, especially Sierra Leone, the Republic of Guinea, Nigeria, and Liberia, where the annual incidence of infection is between 300,000 and 500,000 cases, resulting in 5,000 deaths per year.
Based on the 2021 national mid-term census, Kenema has a population of 255,110. making it the second most populous city in Sierra Leone after Freetown, and the largest city in the country's Eastern Province. Kenema City servers as capital of Kenema District and is a major economic hub in the Eastern Province. Kenema is located approximately 200 miles from Freetown, and 60 kilometres (40 mi) south of Bo.
Aniru Sahib Sahib Conteh was a Sierra Leonean physician and expert on the clinical treatment of Lassa fever, a viral hemorrhagic fever endemic to West Africa caused by the Lassa virus. Conteh studied medicine at the University of Ibadan in Nigeria and taught at Ibadan Teaching Hospital. He later returned to Sierra Leone where he joined the Centers for Disease Control and Prevention (CDC) Lassa fever program at Nixon Methodist Hospital in Segbwema, first as superintendent and then as clinical director.
University of Makeni is the first private, Catholic, university located in Makeni, Sierra Leone.
The 2013–2016 epidemic of Ebola virus disease, centered in Western Africa, was the most widespread outbreak of the disease in history. It caused major loss of life and socioeconomic disruption in the region, mainly in Guinea, Liberia and Sierra Leone. The first cases were recorded in Guinea in December 2013; later, the disease spread to neighbouring Liberia and Sierra Leone, with minor outbreaks occurring in Nigeria and Mali. Secondary infections of medical workers occurred in the United States and Spain. In addition, isolated cases were recorded in Senegal, the United Kingdom and Italy. The number of cases peaked in October 2014 and then began to decline gradually, following the commitment of substantial international resources.
Sheik Umar Khan was the chief Sierra Leonean doctor attempting to curb the country's Ebola outbreak in 2014.
An Ebola virus epidemic in Sierra Leone occurred in 2014, along with the neighbouring countries of Guinea and Liberia. At the time it was discovered, it was thought that Ebola virus was not endemic to Sierra Leone or to the West African region and that the epidemic represented the first time the virus was discovered there. However, US researchers pointed to lab samples used for Lassa fever testing to suggest that Ebola had been in Sierra Leone as early as 2006.
Organizations from around the world responded to the West African Ebola virus epidemic. In July 2014, the World Health Organization (WHO) convened an emergency meeting with health ministers from eleven countries and announced collaboration on a strategy to co-ordinate technical support to combat the epidemic. In August, they declared the outbreak an international public health emergency and published a roadmap to guide and coordinate the international response to the outbreak, aiming to stop ongoing Ebola transmission worldwide within 6–9 months. In September, the United Nations Security Council declared the Ebola virus outbreak in the West Africa subregion a "threat to international peace and security" and unanimously adopted a resolution urging UN member states to provide more resources to fight the outbreak; the WHO stated that the cost for combating the epidemic will be a minimum of $1 billion.
This article covers the timeline of the 2014 Ebola virus epidemic in West Africa and its outbreaks elsewhere. Flag icons denote the first announcements of confirmed cases by the respective nation-states, their first deaths, and their first secondary transmissions, as well as relevant sessions and announcements of agencies such as the World Health Organization (WHO), the U.S. Centers for Disease Control (CDC), and NGOs such as Doctors Without Borders; medical evacuations, visa restrictions, border closures, quarantines, court rulings, and possible cases of zoonosis are also included.
Oyewale Tomori is a Nigerian professor of virology, educational administrator, and former vice chancellor of Redeemer's University. In 2024, he became the chair of West Africa National Academy of Scientists.
The Ebola virus epidemic in West Africa has had a large effect on the culture of most of the West African countries. In most instances, the effect is a rather negative one as it has disrupted many Africans’ traditional norms and practices. For instance, many West African communities rely on traditional healers and witch doctors, who use herbal remedies, massage, chant and witchcraft to cure just about any ailment. Therefore, it is difficult for West Africans to adapt to foreign medical practices. Specifically, West African resistance to Western medicine is prominent in the region, which calls for severe distrust of Western and modern medical personnel and practices.(see Ebola conspiracies below.)
Ebola virus disease in the United Kingdom and Ireland has occurred rarely in four cases to date, namely three health workers returning from treating victims of the Ebola virus epidemic in West Africa in 2014 and 2015, and a single case in 1976, when a laboratory technician contracted the disease in a needlestick injury while handling samples from Africa. All cases recovered. As of 2023, no domestic transmission of Ebola has occurred in the United Kingdom or Ireland.
Cases of the Ebola virus disease in Nigeria were reported in 2014 as a small part of the epidemic of Ebola virus disease which originated in Guinea that represented the first outbreak of the disease in a West African country. Previous outbreaks had been confined to countries in Central Africa.
There is a cure for the Ebola virus disease that is currently approved for market the US government has inventory in the Strategic National Stockpile. For past and current Ebola epidemics, treatment has been primarily supportive in nature.
Post-Ebola virus syndrome is a post-viral syndrome affecting those who have recovered from infection with Ebola. Symptoms include joint and muscle pain, eye problems, including blindness, various neurological problems, and other ailments, sometimes so severe that the person is unable to work. Although similar symptoms had been reported following previous outbreaks in the last 20 years, health professionals began using the term in 2014 when referring to a constellation of symptoms seen in people who had recovered from an acute attack of Ebola disease.
College of Medicine, University of Lagos (CMUL) also known as Medilag is the medical school affiliated with the University of Lagos. It is located in Idi-Araba, Lagos beside its sister institution, the Lagos University Teaching Hospital. The college has a total staff of 1,850 in 32 departments.
Christian Happi is a Professor of Molecular Biology and Genomics in the Department of Biological Sciences and the Director of the African Centre of Excellence for Genomics of Infectious Diseases, both at Redeemer’s University. He is known for leading the team of scientists that used genomic sequencing to identify a single point of infection from an animal reservoir to a human in the Ebola outbreak in West Africa. His research focus is on infectious diseases, including malaria, Lassa fever, Ebola virus disease, HIV, and SARS-CoV-2.
The African Centre of Excellence for Genomics of Infectious Diseases (ACEGID), based at Redeemer’s University, Ede, Nigeria, is a consortium of West African academic and medical institutions partnering for research and training.
