"We do need to brace ourselves for a potentially large number of cases in the following days," said Gladys Berejiklian, the Premier of New South Wales state.
Daily cases have remained in single digits for the last nine days in Victoria while other states and territories have effectively eliminated the virus.
London investors brushed off the expected announcement Monday from the UK government that it will delay the lifting of its remaining lockdown restrictions.
Around a dozen stops are planned over the next two months, in a sign that the former investment banker has an eye on regional elections on June 20 and 27, as well as his own personal political test next year.