Year 9 Science Unit 1 · Disease Lesson 9 of 20 45 min SC5-DIS-09

Australia's Immunisation Story

From the polio epidemics of the 1950s to the COVID-19 pandemic of the 2020s, vaccination has transformed Australian public health. Today, the National Immunisation Program protects millions of Australians from 17 diseases — but the story of how we got here is one of science, persistence, and social change.

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Think First

Before You Begin

Think about diseases that were common in your grandparents' generation but are rare today.

Write down your answers before reading on:

  • What diseases can you think of that have almost disappeared?
  • What do you think caused them to become rare?
  • Why do some people still get these diseases today?
Write your thinking in your book before reading on.

Work mode: Digital — answers typed below

Learning Intentions

Know

  • The history of vaccination in Australia
  • The National Immunisation Program and what it covers
  • Vaccination rates and disease elimination in Australia

Understand

  • How vaccination has changed disease patterns over time
  • Why maintaining high vaccination coverage is essential
  • The challenges of ensuring equitable vaccination access

Can Do

  • Describe the National Immunisation Program schedule
  • Interpret vaccination coverage data
  • Explain why disease elimination requires ongoing effort
Key Terms
National Immunisation Program (NIP) Australia's government-funded program providing free vaccines against 17 diseases to eligible people.
Vaccination coverage The proportion of a target population that has received recommended vaccines.
Disease elimination Reduction of disease incidence to zero in a defined geographic area, with continued measures to prevent re-establishment.
Eradication Permanent reduction to zero of the worldwide incidence of infection caused by a specific agent, with no further control measures needed.
Vaccine hesitancy Delay in acceptance or refusal of vaccination despite availability of vaccine services.
Catch-up vaccination Vaccination given to people who missed doses at the recommended age.
Core Content
1

A History of Vaccination in Australia

From smallpox to COVID-19

T Cells

T Cells

Australia's vaccination history mirrors global progress while addressing unique local challenges.

Early efforts: Smallpox vaccination was first introduced to Australia in 1804, making it one of the earliest public health interventions in the colony. However, vaccination was voluntary and uptake was uneven.

Polio era: In the 1950s, polio epidemics caused widespread fear. Parents kept children home from swimming pools and cinemas. The introduction of the Salk (injected) and Sabin (oral) polio vaccines in the 1950s-60s virtually eliminated the disease in Australia.

Measles, mumps, rubella: The MMR vaccine, introduced in Australia in 1971, dramatically reduced these diseases. A second dose was added in 1992 to boost immunity.

HPV vaccine: Australia became the first country to introduce a national HPV vaccination program in 2007, initially for girls and expanded to boys in 2013.

COVID-19: Australia's rapid vaccine rollout in 2021-2022 demonstrated both the power and challenges of mass vaccination during a pandemic.

2

The National Immunisation Program

What every Australian receives

The National Immunisation Program (NIP) provides free vaccines to Australian citizens and permanent residents. It covers:

  • Children: Vaccines at birth, 2 months, 4 months, 6 months, 12 months, 18 months, and 4 years
  • Adolescents: School-based programs typically at 12-13 years (HPV, diphtheria-tetanus-pertussis, meningococcal ACWY)
  • Adults: Influenza (annually for at-risk groups), pneumococcal, shingles (for older adults)
  • Indigenous Australians: Additional vaccines including hepatitis B (for infants in some areas) and pneumococcal

The NIP currently covers 17 diseases: hepatitis B, diphtheria, tetanus, pertussis (whooping cough), Haemophilus influenzae type b, polio, pneumococcal, rotavirus, measles, mumps, rubella, varicella (chickenpox), meningococcal ACWY, hepatitis A (for Indigenous children in some areas), HPV, influenza, and shingles.

3

Vaccination Coverage and Elimination

Measuring success

Australia has achieved remarkable success through vaccination:

Measles elimination: Declared by WHO in 2014. No continuous transmission occurs. However, imported cases from overseas can spark outbreaks if vaccination coverage drops.

Polio: Australia has been polio-free since 1972. The last wild polio case in the Western Pacific was in 1997, and the region was certified polio-free in 2000.

Rubella elimination: Australia declared rubella eliminated in 2018, meaning no continuous transmission occurs.

Vaccination coverage: Australia's childhood vaccination coverage for 1-year-olds, 2-year-olds, and 5-year-olds has been above 90% for many years, though some communities have lower rates.

However, vaccine hesitancy remains a challenge. Misinformation spread through social media has led to pockets of under-vaccination, resulting in outbreaks of measles and whooping cough.

4

Equity and Access

Ensuring all Australians are protected

While Australia's overall vaccination rates are high, significant disparities exist:

Aboriginal and Torres Strait Islander children: Vaccination coverage has improved dramatically but remains slightly below non-Indigenous children in some regions. Remote location, cultural factors, and healthcare access all play a role.

Remote and rural communities: Access to vaccination services can be limited in remote areas. Mobile clinics and outreach programs help bridge this gap.

Refugees and migrants: People arriving from countries with different vaccination schedules may need catch-up vaccinations.

No Jab, No Pay / No Jab, No Play policies: Since 2016, Australian families must have children fully vaccinated to receive certain government benefits (No Jab, No Pay) and to enrol in childcare in some states (No Jab, No Play). These policies have increased vaccination coverage but remain controversial.

Common Misconceptions

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"Australia has eliminated all infectious diseases." No — Australia has eliminated specific diseases (measles, polio, rubella) from continuous circulation, but imported cases still occur. Many infectious diseases still exist, and new diseases can emerge.

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"Vaccination coverage in Australia is 100%." No — while overall coverage is above 90%, some communities and regions have lower rates. Even small gaps in coverage can lead to disease outbreaks.

✗trong>"Once a disease is eliminated, we can stop vaccinating." No — elimination requires continued vaccination to prevent re-establishment. If vaccination stops, the disease can return, as seen with measles outbreaks in countries where coverage dropped.

Australian Context

The Polio Story — A Australian Triumph

The 1950s polio epidemics: Before vaccines, polio terrified Australian families. Summer "polio seasons" saw children paralysed and confined to iron lungs. In 1952, Australia recorded nearly 2,300 polio cases. The introduction of the Salk vaccine in 1956 and the Sabin oral vaccine in 1966 changed everything. By 1972, Australia was polio-free.

The last Australian polio survivor: Many Australians who contracted polio as children still live with post-polio syndrome — muscle weakness, fatigue, and pain that develops decades after the original infection. Polio Australia advocates for these survivors and works to maintain high vaccination coverage to prevent reintroduction.

Global polio eradication: Australia contributes to global polio eradication efforts through funding and technical support. Only two countries (Afghanistan and Pakistan) still have wild poliovirus transmission. Australia's success story demonstrates what is possible when vaccination, surveillance, and public health work together.

✍ Copy Into Your Books

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NIP Diseases

  • 17 diseases covered including hepatitis B, measles, polio, HPV
  • Free for Australian citizens and permanent residents
  • Given at specific ages from birth to older adults

Australian Achievements

  • Measles eliminated (2014)
  • Rubella eliminated (2018)
  • Polio-free since 1972
  • HPV vaccination program world-first

Challenges

  • Vaccine hesitancy in some communities
  • Equity gaps for Indigenous and remote Australians
  • Imported cases from overseas
Activities
Activity 1

Coverage Data

Interpret vaccination data.

1 Australia's measles vaccination coverage for 5-year-olds is 94%. The herd immunity threshold for measles is about 95%. Is this sufficient? Explain.
Answer in your book.
2 A measles outbreak occurs in a community with 85% vaccination coverage. Explain why this happened and what public health officials should do.
Answer in your book.
3 Compare Australia's polio story with a country where polio is still endemic. What factors explain the difference?
Answer in your book.
Activity 2

Policy Evaluation

Analyse Australian vaccination policies.

1 Evaluate the "No Jab, No Pay" policy. What are its benefits and potential drawbacks?
Answer in your book.
2 Why did Australia add a second dose of MMR vaccine in 1992? Use immunology concepts to explain.
Answer in your book.
3 Design a community outreach program to improve vaccination rates in a remote Aboriginal community. Consider cultural sensitivity, access, and education.
Answer in your book.
Multiple Choice
Q

Test Your Understanding

RememberBand 3

1. Which disease was declared eliminated from Australia by the WHO in 2014?

APolio
BSmallpox
CMeasles
DRubella
RememberBand 3

2. How many diseases does the National Immunisation Program currently cover?

A5
B10
C17
D25
UnderstandBand 4

3. What is the main reason measles outbreaks still occur in Australia?

AThe vaccine does not work
BImported cases from overseas in under-vaccinated communities
CMeasles has mutated beyond vaccine protection
DAustralia has run out of vaccines
RememberBand 3

4. Australia's HPV vaccination program was significant because it was:

AThe cheapest vaccine program
BThe first national HPV program in the world
COnly for girls
DOnly available in cities
UnderstandBand 4

5. "No Jab, No Play" policies require vaccination for:

AAll school attendance
BChildcare enrolment in some states
CInternational travel
DEmployment in hospitals
Short Answer
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Short Answer Questions

UnderstandBand 4

1. Describe three major achievements of Australia's vaccination programs and explain how each has improved public health. 4 MARKS

Answer in your book.
UnderstandBand 4

2. Explain why maintaining high vaccination coverage is essential even after a disease has been eliminated in Australia. 4 MARKS

Answer in your book.
EvaluateBand 5

3. Evaluate the effectiveness of "No Jab, No Pay" and "No Jab, No Play" policies in increasing vaccination coverage. Discuss both benefits and ethical concerns. 4 MARKS

Answer in your book.

Revisit Your Thinking

Go back to your Think First answer. Has your understanding changed?

Update your thinking in your book.

Answers

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MCQ 1

C — Measles was declared eliminated from Australia by WHO in 2014, meaning no continuous transmission occurs.

MCQ 2

C — The National Immunisation Program currently provides free vaccines against 17 diseases.

MCQ 3

B — Measles outbreaks occur when travellers bring the virus from overseas and it spreads in communities with insufficient vaccination coverage.

MCQ 4

B — Australia became the first country in the world to introduce a national HPV vaccination program in 2007.

MCQ 5

B — "No Jab, No Play" policies in some Australian states require children to be vaccinated to enrol in childcare and early education services.

Short Answer 1

Model answer: Three major achievements of Australia's vaccination programs are: (1) Measles elimination (2014) — Measles was once a common childhood disease that caused pneumonia, brain inflammation, and death. Elimination means no continuous transmission occurs, preventing hundreds of cases and saving lives annually. (2) Polio-free status since 1972 — Polio caused paralysis and death, with major epidemics in the 1950s. Elimination has prevented thousands of cases of paralysis and eliminated the need for iron lungs and rehabilitation services. (3) World-first national HPV program (2007) — By vaccinating against human papillomavirus, Australia is on track to become the first country to eliminate cervical cancer. This will prevent hundreds of deaths annually and reduce the burden of throat and anal cancers. Each achievement demonstrates how vaccination transforms public health, reduces healthcare costs, and prevents suffering.

Short Answer 2

Model answer: Maintaining high vaccination coverage after elimination is essential for several reasons. First, imported cases still occur when travellers bring diseases from overseas. Without high coverage, these imported cases can spark outbreaks, as seen with measles in under-vaccinated communities. Second, diseases can re-establish if coverage drops below herd immunity thresholds. Measles, which requires 95% coverage, has re-emerged in countries where vaccination declined. Third, high coverage protects vulnerable individuals who cannot be vaccinated — newborns, people with compromised immune systems, and those with severe allergies. Finally, Australia's global interconnectedness through travel and trade means diseases are never far away. Ongoing vaccination, surveillance, and rapid outbreak response are necessary to maintain elimination status.

Short Answer 3

Model answer: "No Jab, No Pay" and "No Jab, No Play" policies have been effective in increasing vaccination coverage in Australia. Evidence shows that childhood coverage rose after these policies were introduced in 2016. The benefits include protecting the community through herd immunity, reducing disease outbreaks, and ensuring children receive essential healthcare. However, ethical concerns exist. These policies may penalise disadvantaged families who face barriers to vaccination (transport, health literacy, cultural factors) rather than genuine refusal. There are also concerns about autonomy — some argue that financial penalties infringe on parental decision-making rights. Additionally, punitive approaches may increase distrust in government and healthcare systems among some communities. A more effective long-term approach might combine incentives with education, improved access (especially in remote areas), and culturally sensitive engagement to address the root causes of under-vaccination.

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Lesson Game

Immunisation Hero

Manage Australia's immunisation program! Balance budgets, target at-risk populations, and respond to outbreaks in this public health strategy game.

Mark lesson as complete

Tick when you have finished all activities and checked your answers.

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