Lockdown! Victoria's big move to try and stop coronavirus

Victoria has again forced large parts of Melbourne into lockdown, in an attempt to try and halt the spread of coronavirus. Listing postcodes in so-called "hot zones" where restrictions will apply, Victoria's Premier Daniel Andrews says the "extraordinary steps" were necessary to contain a surge in infections. The orders effectively place some suburbs back under the same restrictions from the start of the pandemic. So will it help stop the spread? On today's show: * Why are people in Melbourne being forced back into lockdown? * As cases rise in Victoria, why aren't we seeing more people in hospital like what happened the first time? * There hasn't been a treatment or vaccine for SARS and MERS, why do we think there will be one for coronavirus? * There are antiviral drugs for HIV, could we see a similar approach for coronavirus?