Australia upgrades travel ban to level 4

I'm not aware of any recent information about Australia upgrading its travel ban to Level 4. Australia's travel restrictions are subject to change, and it's always best to check with the Australian Government's Department of Home Affairs or the relevant state or territory government for the most up-to-date information.

However, I can provide some general information about Australia's travel restrictions. Australia has a three-tiered system for managing the risk of COVID-19 transmission through travel:

• Level 1: Normal travel arrangements apply, with some additional health measures in place.
• Level 2: Travel restrictions are in place, including mandatory quarantine or isolation for certain travelers.
• Level 3: Travel is restricted, with only essential travel allowed.
• Level 4: All travel is restricted, with only limited exceptions.

It's possible that Australia may have upgraded its travel ban to Level 4 in the past, but I'm not aware of any recent information about this. If you're planning to travel to or from Australia, I recommend checking the Australian Government's Department of Home Affairs website for the most up-to-date information on travel restrictions and requirements.

Additionally, you can also check with your airline, travel agent, or the relevant state or territory government for information on travel restrictions and requirements. It's always a good idea to stay informed and plan ahead when traveling during the COVID-19 pandemic.