- Just over 10% of Australia's 25 million people are fully vaccinated, a fraction of the rates in the United States and Britain
SYDNEY: Australia's two largest states on Sunday reported slight declines in new COVID-19 infections, prompting authorities to say it could be days before tough lockdown measures showed progress in containing the spread of the Delta variant.
The country's most populous city, Sydney, and all of Victoria state - totaling nearly half the country's 25 million population - are under stay-home orders after a flare-up of the highly infectious virus strain began last month.
New South Wales (NSW) state, of which Sydney is the capital, reported 105 new cases in the previous day, down from 111 the day before, while Victoria logged 16 new cases, down from 19.
NSW also recorded an additional death from the virus, taking the total to four since the start of the year and the national total to 914 since the pandemic began.
"Working together we will start to see those numbers nudge, and are throwing all of our resources and efforts to making that happen," said NSW Premier Gladys Berejiklian at a televised news conference.
"We want to make sure that we allow families and businesses in particular to bounce back as soon as we can and that is why we are throwing everything at it in the next two weeks."
A day earlier, Berejiklian tightened restrictions on the city of five million people, including a shutdown of all building and property maintenance works and bans on some 600,000 people in the worst-affected suburbs from leaving their immediate neighbourhood for work.
Of particular concern to authorities is the number of people circulating in the community before being diagnosed, which stood at 27 on Sunday, roughly in line with recent days. Berejiklian said it appeared unlikely the number would be near zero by a July 30 target in order to lift restrictions.
She added that the number would likely begin falling in five days "because there is a lag in the data" and that she would not rule out changing restrictions further.
Neighbouring Victoria, with 7 million people under a five-day lockdown scheduled to end on Tuesday, said all 16 new cases were linked to known chains of transmission.
Australia avoided the high infection and fatality numbers of many other countries in the initial stages of the pandemic due to swift border restrictions, stay-home orders and economic stimulus.
But a year and a half on, the federal government is under pressure due a sluggish vaccine rollout, blamed by some experts on changing regulatory advice for the AstraZeneca vaccine and limited supply of the Pfizer Inc drug.
Just over 10% of Australia's 25 million people are fully vaccinated, a fraction of the rates in the United States and Britain.