Victoria has recorded 12 new locally acquired cases of coronavirus, as the premier warns the state’s five-day lockdown could be extended.  The health department confirmed it recorded 13 new local infections in the 24 hours to July 19 morning, one of which is a case in Mildura, previously announced by authorities.  All the new cases are linked to the current outbreaks of the Delta variant in the state, which originated in NSW.  Victoria also recorded one new infection acquired overseas, currently in hotel quarantine, bringing its total number of active cases to 81. Stay-at-home orders are due to expire at midnight on July 20 but Premier Daniel Andrews has warned they could be extended.  Chief Health Officer Brett Sutton said further case numbers and exposure sites would determine whether the lockdown would be extended.  “Every Victorian needs to ready themself for what might emerge over the next 24/48 hours,” he said …