Australia’s active vaccine safety system

AusVaxSafety has been conducting active safety surveillance of Beyfortus (nirsevimab) – a new long-acting injectable monoclonal antibody product used for the prevention of severe respiratory syncytial virus (RSV) disease in infants – at participating sites in New South Wales and Queensland throughout the 2024 winter season.

In Australia, nirsevimab is currently only available to infants and young children through state-managed programs in New South Wales, Queensland and Western Australia.

Safety data are gathered via surveys sent to recipients in the days following nirsevimab administration.

The Western Australia RSV immunisation program also includes active safety surveillance, with reports published through Government of Western Australia Department of Health channels.

As the end of the 2024 winter season approaches and 2024 state-based programs finish, the use of nirsevimab is expected to slow. Unfortunately, AusVaxSafety do not have enough data to enable meaningful analysis for 2024.

Plans for surveillance of nirsevimab in 2025 are currently under consideration and will be informed by future nirsevimab programs. AusVaxSafety will update this page as 2025 nirsevimab surveillance plans materialise.