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Post-Ebola virus syndrome

Post-Ebola virus syndrome is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Post-Ebola virus syndrome rather than just read about it. In short: Post-Ebola virus syndrome (or post-Ebola 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.

Post-Ebola virus syndrome — main illustration
Post-Ebola virus syndrome — illustration

Key takeaways

  • Post-Ebola virus syndrome belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Post-Ebola virus syndrome to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Post-Ebola virus syndrome from memory before moving on to harder problems.

Reference excerpt

Post-Ebola virus syndrome (or post-Ebola 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.

Signs and symptoms

Researchers have been aware of a group of symptoms that frequently followed Ebola virus disease for 20 years, but it became more widely reported with the large number of survivors of the deadly epidemic in West Africa in 2014. Post Ebola syndrome may manifest as joint pain, muscle pain, chest pain, fatigue, hearing loss, hair loss, cessation of menstruation, and poor long-term health. Some survivors report neurological issues including memory problems and anxiety attacks. Vision loss is also frequently reported, along with eye pain, inflammation, and blurred vision. Two papers published in the New England Journal of Medicine in 2015 report that symptoms include lethargy, joint pains, hair loss, and vision loss, frequently to the point of near blindness, and uveitis.

Mechanism

Although, there is some progress that may potentially help Ebola survivors, adequate funding and further research is required to help provide more answers about post-Ebola syndrome. Studies from previous outbreaks reveal that the virus is able to survive for months after recovery in some parts of the body such as the eyes and testes, where the immune system cannot reach. It is not known if the neurologic symptoms seen in survivors are a direct result of the virus or, instead, triggered by the immune system's response to the infection. It is known that Ebola can trigger a massive cytokine storm that can cause bleeding throughout the body, including the brain, which may explain various neurological symptoms that have been reported.

Diagnosis In terms of diagnosis, the individual may show sensitivity to light or eye redness when ocular problems are suspected. Neurologically the individual's coordination, gait and frontal release signs should be observed.

Management Management depends on the symptoms displayed, for example, if the individual indicates muscular-skeletal pain then paracetamol may be administered. If the individual presents with ocular problems, then prednisone and cyclopentolate may be used for treatment, according to the WHO.

Prognosis

Viral persistence and transmission According to a review by Brainard, et al., Ebola virus was identified in almost 3 out of 4 seminal fluid samples (18 survivors) almost 4 months after initial infection, with the last positive samples being more than 6 months (203 days) after infection had occurred. Another aspect of survivors of the Ebola virus, is that it could become sexually transmitted, as the virus is present in semen nine months after the individuals are declared free of Ebola. A 2017 study found the virus in the semen of some men after more than two years following the recovery from the acute infection and in one case, Ebola viral RNA was identified up to 40 months after illness. At the start of 2021 an outbreak of EVD that caused 18 cases and 9 deaths in Guinea is thought to be due to a West Africa Ebola outbreak survivor. This individual apparently infected a woman more than 5 years after he himself had incurred the infection

… excerpt ends here. Continue reading the full article.

Illustrations

Post-Ebola virus syndrome illustration
Post-Ebola virus syndrome illustration
Post-Ebola virus syndrome: Doctors put on protective gear before entering an Ebola treatment ward in Liberia, August 2014.
Doctors put on protective gear before entering an Ebola treatment ward in Liberia, August 2014.

Worked examples

Example 1 — a first encounter with Post-Ebola virus syndrome

Start with the simplest possible case. Write down what Post-Ebola virus syndrome claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Post-Ebola virus syndrome before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Post-Ebola virus syndrome ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Post-Ebola virus syndrome

In research
Post-Ebola virus syndrome appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Post-Ebola virus syndrome in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Post-Ebola virus syndrome is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ebola, Syndromes caused by microbes, West African Ebola virus epidemic, so understanding it makes those chapters shorter.
In everyday life
Look for Post-Ebola virus syndrome outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Post-Ebola virus syndrome in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Post-Ebola virus syndrome means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Post-Ebola virus syndrome out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Post-Ebola virus syndrome in simple terms?

Post-Ebola virus syndrome (or post-Ebola 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…

Why does Post-Ebola virus syndrome matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Post-Ebola virus syndrome?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Post-Ebola virus syndrome.

Tags

  • Ebola
  • Syndromes caused by microbes
  • West African Ebola virus epidemic

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