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What is a pandemic?

7-minute read

Key facts

  • A pandemic is the worldwide spread of a new disease, such as a new influenza virus or the coronavirus that causes COVID-19.
  • The Australian Government has a plan to minimise the impact of pandemics, which includes extra personal protective equipment (PPE) for health workers, and border controls.
  • It's important to prepare your own plan to deal with pandemics, which you should discuss with family or trusted friends.
  • Knowing how to self-isolate and practise physical distancing will help stop the spread of a pandemic.

What is a pandemic?

A pandemic is the worldwide spread of a new disease. Viral respiratory diseases, such as those caused by a new influenza virus or the coronavirus COVID-19, are the most likely to turn into a pandemic.

A pandemic is not the same as an epidemic. In an epidemic, many more cases of a health condition occur than would normally develop in a community or region, but the condition does not spread further.

In the past, there have been numerous influenza pandemics. Pandemic influenzas often have their origin in animal influenza viruses and are not the same as seasonal influenza. Few people, if any, will have immunity against a pandemic influenza virus — even if they have had seasonal flu or a seasonal flu vaccination.

How is a pandemic declared?

The World Health Organization (WHO) is responsible for declaring when a global pandemic is occurring. The WHO does this by monitoring outbreaks of a disease and taking advice from international health experts. Australia and other countries are, however, likely to take steps to reduce the impact of an pandemic before the WHO makes a formal declaration.

How does Australia respond to influenza pandemics?

The Australian Government has in place a health management plan to minimise the impact of an influenza pandemic on Australians' health and the healthcare system.

To control infection, health authorities may provide information about the importance of good hand and cough hygiene — hand washing and coughing or sneezing into the elbow — to minimise the chance of transmitting the virus. They may also issue personal protective equipment (PPE), such as masks, to healthcare providers and workers who come into close contact with infected individuals.

Travellers — aboard flights or ships — may receive information about the pandemic, while other sources of information, such as the Smartraveller website may advise on high-risk destinations. At entry points into Australia, travellers may find healthcare staff doing screening checks, such as checking temperatures with hand-held scanners.

State education departments may decide to close schools or provide remote learning. Businesses may be encouraged to let staff work from home and mass gatherings may be cancelled. In some cases, people confirmed with having the infection — and people who have come into contact with confirmed cases — may be asked to self-isolate.

Commonwealth biosecurity laws and state and territory public health and emergency response laws allow these measures to be enforced. However, generally people are asked to comply with measures voluntarily.

Healthcare is managed by state and territory authorities so different states may have different policies, such as those regarding school closures.

How should I prepare for a possible pandemic?

FIND A HEALTH SERVICE — The Service Finder can help you find doctors, pharmacies, hospitals and other health services.


How do I self-isolate during a pandemic?

You may need to isolate yourself at home during a pandemic if you are experiencing symptoms, or even if you have no symptoms but are confirmed to be infected.

If you need to isolate yourself, you should:

Follow this link for information on caring for someone who needs to be isolated at home during a pandemic, such as the COVID-19 pandemic.

If your condition worsens while in isolation, seek prompt medical attention. You may leave home, but make sure you call before visiting your doctor or hospital emergency department. Some doctors, such as GPs, may offer a phone or video appointment instead of an in-person appointment. If you have recently travelled, make sure to tell your doctor.

CHECK YOUR SYMPTOMS — Use the Symptom Checker and find out if you need to seek medical help.


What is ‘physical distancing’?

Physical distancing helps prevent viruses from spreading. You practise some forms of physical distancing yourself, such as choosing where you stand on the bus. Other physical distancing measures (such as the cancellation of large sporting events) may be enforced by government or private groups and organisations.

Physical distancing practices include:

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