COVID-19 vaccination – Creating an immune response

In this video, immunologist Professor Ian Frazer AC discusses side effects from the COVID-19 vaccines.


My name is Professor Ian Frazer. I’m an Immunologist and co-creator of one of the world’s first cancer preventing vaccines.

I’ve been working with the science of vaccination for nearly 50 years, and today I’d like to share some knowledge with you.

The COVID-19 vaccines now being rolled out across Australia are proven to be effective by our regulator, the Therapeutic Goods Administration, or TGA.

The TGA monitors reported side effects or more serious events, and encourages health professionals and consumers to report suspected side effects.

As with all vaccines, it’s possible you may experience some minor side effects after receiving the vaccine.

These include headaches, chills, fatigue, faintness, body aches or tenderness where the vaccine was given, and usually last a day or two.

If you do experience any of these side effects, you shouldn’t be concerned. They are all normal responses to any vaccine.

It’s important to remember side effects are our body’s way of demonstrating the vaccine is working.

Our immune system is building its ability to recognise the virus and fight it off

If any side effects persist – or in the unlikely event that you experience more severe symptoms – you should contact your health professional. You can also access the COVID-19 Vaccine Side Effect Checker through the Department of Health website

If you have any questions or concerns about getting the vaccine, it’s important to get advice you can trust from a reliable source.

For accurate, evidence-based information, visit or

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