Australia is about to embark on the biggest mass immunisation program in its history, with authorities confident of pulling off the massive logistical effort. A top medical official has backed Australia to pull off its biggest ever mass immunisation program despite enormous logistical challenges. Coronavirus jabs will start on Monday as the nation pins its hopes on vaccines forging a path out of the pandemic nightmare. Deputy Chief Medical Officer Michael Kidd is adamant authorities will be able to roll out the program across the vast island continent. “Huge logistics behind this but we have a very tried and tested system for immunising our population, and that’s what we’re utilising,” he told the ABC on Friday. A flying squad of 500 nurse immunisers will be dispatched around the nation to vaccinate aged care and disability residents who are in the initial phase. Hubs at major hospitals will also be ground …