1. Introduction
Ebola Virus Disease (EVD) is a severe, potentially fatal viral infection that may cause systemic illness, bleeding and multiple-organ failure.
Nigeria outbreak update (October 2026)
A confirmed imported case of Bundibugyo ebolavirus disease was reported in the Federal Capital Territory (FCT), prompting isolation and contact tracing.
2. Epidemiology
Ebola outbreaks occur mainly in sub-Saharan Africa. Fruit bats are considered likely natural hosts. Transmission occurs through direct contact with infected body fluids, contaminated materials or infected animals. The incubation period is 2–21 days.
3. Classification
Ebola viruses belong to the family Filoviridae. Important species include Zaire, Sudan, Bundibugyo, Taï Forest and Reston ebolaviruses. The current Nigerian case involves Bundibugyo ebolavirus.
4. Cause
EVD is caused by ebolavirus infection, transmitted through broken skin or mucous membranes exposed to infected blood, body fluids, contaminated objects or infected animals.
5. Pathophysiology
The virus infects immune cells, multiplies and spreads through the bloodstream. It disrupts immune responses, causes inflammation, damages blood vessels and organs, and may lead to clotting abnormalities, shock and organ failure.
6. Signs and Symptoms
- Early: Sudden fever, headache, weakness, muscle pain and sore throat.
- Later: Vomiting, diarrhoea, abdominal pain, rash and dehydration.
- Severe cases: Bleeding, shock and multiple-organ failure.
Bleeding does not occur in every case.
7. Diagnosis and Tests
Diagnosis involves clinical assessment, exposure history and laboratory testing, especially RT-PCR.
Other tests assess liver and kidney function, blood counts and clotting. Malaria, Lassa fever and sepsis are important differential diagnoses.
8. Treatment
Treatment involves isolation and supportive care, including fluids, electrolyte correction, nutritional support and management of complications.
There is currently no established, approved virus-specific treatment for Bundibugyo EVD.
9. Complications
Complications include severe dehydration, bleeding disorders, liver and kidney failure, shock, multiple-organ failure and death.
10. Prevention
- Practise regular hand hygiene.
- Avoid contact with suspected cases and their body fluids.
- Use appropriate PPE and infection-control measures.
- Ensure safe handling and burial of deceased patients.
- Trace and monitor contacts for 21 days after their last exposure.
- Report suspected cases promptly to public health authorities.
11. Prognosis
EVD can be fatal, with historical case-fatality rates varying widely by outbreak and virus species. Early diagnosis, prompt isolation and quality supportive care improve survival.
Public health message: Nigeria’s confirmed imported case requires vigilance, contact tracing and strict infection prevention.
For verified updates, consult the Nigeria Centre for Disease Control and Prevention, and the World Health Organisation websites.
Dr Olumide Paul Odugbesan,
Health Assur Limited.