Health authorities are nervously awaiting test results for dozens of vulnerable aged-care residents amid fears the deadly coronavirus has again crept into one of Victoria’s nursing homes. Thousands of shoppers at Australia’s biggest retail centre are on notice and dozens of staff have been forced into isolation after Chadstone ­became the latest hot spot for COVID  exposure concern. Leading epidemiologists are warning that Australians will not be fully vaccinated by Christmas based on the current speed of the rollout. Struggling Victorian businesses are pleading for more help to survive lockdowns as the state and federal governments argue over who should help keep them afloat.  For updates and breaking news throughout the day, take out a subscription at heraldsun.com.au