It's interesting that in Australia you still have the notion of lockdown at all. I do understand the need for it. It's an important tool.
But here in the US lockdown is no longer an option or a tool to use to slow or stop the virus. We've opened the floodgates and opened everything up and we will never be able to close down again because of the nasty and science ignorant politics.
Sure, we had that bright and shiny moment when the vaccines came out and we thought it was all done with. Yet, the anti-vaxxers and DELTA have thrown all of our naive hope down the toilet and our numbers are as bad as during the worse days before the vaccines. Go figure!