Australia’s chief medical officer Professor Brendan Murphy has confirmed health experts believe the new coronavirus is contagious before people show symptoms. The major update in advice from health authorities comes as Victoria’s chief medical officer confirmed there is a second case of coronavirus in that state. Professor Murphy told reporters in Canberra on Wednesday that contacts of any confirmed coronavirus cases "now must be isolated in their home following exposure". Australia’s chief medical officer Brendan Murphy has changed the health advice on coronavirus after reports of transmission without symptoms.Credit:Jason South The updated advice follows a meeting of the Australian Health Protection Principal committee on Wednesday afternoon, Professor Murphy said. "The committee is aware of very recent cases of coronavirus who are at the time of diagnosis asymptomatic or minimally symptomatic," he said. "We’re also aware of one fairly convincing case of probable transmission from a pre-symptomatic case to other […]