Millions of Australians are this week under Covid lockdowns, 18 months on from the virus reaching our shores - with one expert saying they could remain until next year. On Tuesday, Victoria extended their lockdown, South Australia joined them by announcing their own, and in NSW authorities have hinted at keeping restrictions in place until widespread vaccination. Infectious diseases expert Professor Peter Collignon said previous outbreaks of the Delta variant in Australia had been contained but this wave was more advanced. Experts have suggested Australia could endure lockdown restricti...