Australia’s active vaccine safety system

Adverse event of special interest (AESI) long-term follow-up program

Our work

AusVaxSafety, together with the Australian Government Department of Health and Aged Care, state and territory health departments and the Therapeutic Goods Administration (TGA), is conducting long-term follow-up surveillance of individuals who experienced an adverse event of special interest (AESI) following COVID-19 vaccination. 

The program will help us gain a greater understanding of the characteristics, progress and outcomes of individuals affected by AESIs following COVID-19 vaccination. Data captured from the program will provide clinicians treating patients affected by these AESIs with important clinical management information and will inform future government and expert advisory body guidance around COVID-19 vaccination in Australia.

How it works

Diagram of how system works

What is an adverse event of special interest?

An AESI is a defined condition or event that occurs in some individuals following immunisation, that has the potential to be causally associated with a vaccine product. Examples of AESIs include anaphylaxis, myocarditis and more recently TTS. AESIs need to be carefully monitored and confirmed by further research studies, which is what the AusVaxSafety AESI follow-up program will help contribute to in an Australian setting.

AESIs currently being investigated 

Click on the tiles below to find out more about each AESI being investigated.

Thrombosis with thrombocytopenia syndrome (TTS)
Myocarditis
Our work

News & events

All news & events

AusVaxSafety receives funding
from the Australian Government

NCIRS, Kids Research, Sydney Children’s Hospitals Network, Cnr Hawkesbury Rd & Hainsworth St, Westmead Locked Bag 4001, Westmead NSW 2145 Tel (612) 9845 1433  |  Fax (612) 9845 1418  |  ABN 53 188 579 090

We acknowledge that the National Centre for Immunisation Research and Surveillance (NCIRS) is on the land of the traditional owners the Aboriginal and Torres Strait Islander peoples, the First Australians, and recognise their culture, history, diversity and their deep connection to the land. Together, through research and partnership, we aim to move to a place of equity for all. NCIRS also acknowledges and pays respect to other Aboriginal and Torres Strait Islander nations from which our research, staff and community are drawn.

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NCIRS, Kids Research, Sydney Children’s Hospitals Network, Cnr Hawkesbury Rd & Hainsworth St, Westmead Locked Bag 4001, Westmead NSW 2145 Tel (612) 9845 1433  |  Fax (612) 9845 1418  |  ABN 53 188 579 090

Our website meets the criteria for credibility and content as defined by the Global Advisory Committee on Vaccine Safety.

We acknowledge that the National Centre for Immunisation Research & Surveillance (NCIRS) is on the land of the traditional owners the Aboriginal and Torres Strait Islander peoples, the First Australians, and recognise their culture, history, diversity and their deep connection to the land. Together, through research and partnership, we aim to move to a place of equity for all. NCIRS also acknowledges and pays respect to other Aboriginal and Torres Strait Islander nations from which our research, staff and community are drawn.