'If we start having a build-up of COVID and influenza, that's a sort of double whammy on the system. We know how the system can be affected by that from our experiences with COVID. The impacts are that it's unsafe for patients and staff when you have emergency departments which are overcrowded. On top of that, you have patients who have been waiting maybe a year for an operation, which has been cancelled as the bed is needed by somebody else. The lesson we've got to learn is that it's vital that people get their booster shots. It's important that people still have time to take care of themselves. We know that the virus is out there, and for people who may have had boosters five, six or seven months ago, it's time to revisit that.'