biology

Palm Island mystery disease

Palm Island mystery disease is a biology 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 Palm Island mystery disease rather than just read about it. In short: The Palm Island mystery disease, also known as hepatoenteritis and hepato-enteritis, was an outbreak of a hepatitis-like illness on Great Palm Island, Queensland, reported in 1979, associated in many cases with dehydration and bloody diarrhea. 148 people (138 children and 10 adults) of Aboriginal and Torres Strait Islander descent were affected. Causes The cause of the outbreak was determined to be the addition of e…

Key takeaways

Palm Island mystery disease belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Palm Island mystery disease to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Palm Island mystery disease from memory before moving on to harder problems.

Reference excerpt

The Palm Island mystery disease, also known as hepatoenteritis and hepato-enteritis, was an outbreak of a hepatitis-like illness on Great Palm Island, Queensland, reported in 1979, associated in many cases with dehydration and bloody diarrhea. 148 people (138 children and 10 adults) of Aboriginal and Torres Strait Islander descent were affected.

Causes The cause of the outbreak was determined to be the addition of excessive doses of copper sulfate to the water supply of Solomon Dam, which had been added to target a cyanobacteria bloom of Cylindrospermopsis raciborskii. The excessive dosing was following the use of least-cost contractors, who were unqualified in the field, to control the algae. Toxins from the cyanobacteria itself had also been described as a possible cause. Early suggestions included toxocariasis.

Presentation Symptoms of hepatoenteritis included diarrhoea, vomiting attacks, loss of balance and disorientation. The perinatal effects of cyanobacteria contamination of drinking water include prematurity, low birth weight and congenital defects detected at birth. In 1996 there were 63 deaths attributed to drinking water contamination in Caruaru, Brazil.

References

Further reading Bourke ATC, Hawes RB, Nielson A, Stallman ND. An outbreak of hepatoenteritis (the Palm Island mystery disease) possibly caused by algal intoxication [abstract]. Toxicon Suppl 1983;45-48.

See also Cyanotoxin Cylindrospermopsis raciborskii

Illustrations

Worked examples

Example 1 — a first encounter with Palm Island mystery disease

Start with the simplest possible case. Write down what Palm Island mystery disease claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Palm Island mystery disease 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 Palm Island mystery disease 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 Palm Island mystery disease

In research: Palm Island mystery disease appears in biology 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 Palm Island mystery disease 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: Palm Island mystery disease is common in secondary-school and first-year university syllabi. It links to neighbouring topics Palm Island, Queensland, Poisoning by drugs, medicaments and biological substances, so understanding it makes those chapters shorter.
In everyday life: Look for Palm Island mystery disease 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 Palm Island mystery disease in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Palm Island mystery disease means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Palm Island mystery disease out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Palm Island mystery disease in simple terms?

Why does Palm Island mystery disease matter?

Because it connects several biology 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 Palm Island mystery disease?

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 Palm Island mystery disease.