Ebola
- Ebola virus disease (EVD), formerly known as Ebola haemorrhagic fever
- natural hosts - thought to be fruit bats.
- rare but severe, often fatal.
- Average case fatality rate is around 50%. Has varied from 25% to 90% in past outbreaks.
- spreads through human-to-human transmission via direct contact (through broken skin or mucous membranes) with:
- Blood or body fluids from living or dead
- Objects that have been contaminated with body fluids
- ceremonial burials also a source
- incubation period: 2-21/7.
- not contagious unless symptomatic.
Clinical
Symptoms can be sudden and include:
- Fever, Fatigue, Muscle pain
- Headache, Sore throat
- Vomiting, Diarrhoea
- Rash
- Symptoms of impaired kidney and liver function
- internal and external bleeding
- Ix: low WCC & platelet counts and elevated LFTs.
- Specific labs:
- antibody-capture enzyme-linked immunosorbent assay (ELISA)
- antigen-capture detection tests
- serum neutralization test
- reverse transcriptase polymerase chain reaction (RT-PCR) assay
- electron microscopy
- virus isolation by cell culture.
Treatment
- supportive primarily - trials with blood products, immunotherapies, antivirals
- monoclonal antibodies (Inmazeb and Ebanga) have been approved
- Ervebo vaccine is effective