Hundreds of Victorians have been forced to self-isolate after a hotel quarantine worker linked to the Australian Open tested positive to COVID-19. The 26-year-old man from Noble Park in the city’s southeast returned a positive test on February 3, five days after he completed his last shift as a resident support officer at the Grand Hyatt hotel, as part of the Australian Open quarantine program. Two of the man’s close household contacts have tested negative, while health authorities have been able to reach 19 of the 20 people identified as close contacts. A further 600 casual contacts also have been told to isolate and get tested, as have 520 Australian Open players, officials and support staff. Wastewater samples collected from the southeast on Tuesday have also come back negative for COVID-19. “These are all good positive early signs. We have got to this in good time,” Premier Daniel Andrews told …