Year 9 Science · Unit 1 · Lesson 9
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Learning Goals
Scientific fraud and its consequences
In 1998, British surgeon Andrew Wakefield published a study in The Lancet claiming to have found a link between the MMR vaccine and autism. The study involved only 12 children. In 2010, the paper was retracted after investigations revealed Wakefield had manipulated data, had undisclosed financial conflicts of interest, and had subjected children to invasive tests without ethical approval. Wakefield lost his medical licence. However, vaccination rates in the UK and Australia fell significantly before the retraction, contributing to measles outbreaks.
(a) What specifically made Wakefield's study fraudulent? Identify at least two scientific problems with the research beyond just the small sample size.
(b) The paper was retracted in 2010, but parents who read it in 1998 still refused vaccines for their children years later. Explain how a retracted paper could cause ongoing public health harm, and what this tells us about the relationship between science communication and community trust.
(c) What genuine vaccine safety monitoring systems exist in Australia? Name at least two and briefly explain what each does.
Read the graph
Confirmed measles cases reported in Australia, 2010–2020
Data: NNDSS / Australian Government Department of Health, adapted for educational use.
(a) Describe the overall trend in measles cases between 2010 and 2020. Identify any notable spikes and the years they occurred.
(b) The number of cases in 2019 was approximately 285. Using the concept of herd immunity, explain why this spike occurred and why cases fell dramatically in 2020.
(c) Measles was declared eliminated in Australia in 2014, yet cases still appeared every year after that. Does this mean elimination "failed"? Explain using the definition of disease elimination versus eradication.
Wrap Up
In one sentence, explain how scientific fraud, even when retracted, can cause lasting real-world harm to public health.