Sydney news: Four ambulance stations shut for cleaning after contact with COVID-19 case Posted MonMonday 11 updated MonMonday 11 Share Print text only Ambulance stations close for cleaning A positive COVID-19 case was transported between hospitals on the weekend. ( ABC News) Four Western Sydney ambulance stations have been closed overnight for cleaning after a positive COVID-19 case came into contact with some crew. The Penrith, Blacktown, Warragamba and Riverstone ambulance stations were all closed after paramedics were potentially exposed to a positive case who visited the Mt Druitt emergency department on Saturday. It's understood the ambulance stations should be operating normally by this morning.