Three new cases of novel coronavirus have been confirmed in Queensland on top of an additional three new cases in Victoria.

In Queensland, a 42-year-old female from the Sunshine Coast region is in isolation in the Sunshine Coast University Hospital in a stable condition.

She is the partner of the 38-year-old woman with COVID-19, confirmed on March 8, who has recently travelled from London through Dubai.

A 46-year-old female from Brisbane is in isolation, in a stable condition in the Royal Brisbane and Women’s Hospital. She has recently travelled to Austria and France.

A 22-year-old male from Brisbane with confirmed COVID-19 is in isolation, in a stable condition in The Prince Charles Hospital. He has recently travelled to Spain, Italy and France.

Three new coronavirus cases have also emerged in Victoria, including what is believed to be the state’s first human-to-human transmission.

Melbourne’s hospitals have been put under pressure today with queues forming outside as people wait to be tested and for results.

The state’s Premier Daniel Andrews says the state will face “extreme measures” to stop the spread of the virus – saying it is inevitable that all schools will be forced to close at some stage.

“Some of these potential measures are serious and go beyond anything we have experienced in Victoria. But when it comes to protecting those most at risk, we need to be ready,” Mr Andrews said.

One of the new cases is a man in his 70s who arrived in Melbourne on flight EK404 from Singapore on March 6.

“The flight manifest of EK404 is being obtained to begin contact tracing of passengers in the same and adjacent rows. He had earlier travelled to Israel, Jordan, Egypt and Singapore,” Victoria’s Chief Health Officer Brett Sutton said.

A woman who also tested positive for the virus is a household contact of a Victorian person who was confirmed as having the COVID-19 virus after returning from the US on February 28.

Dr Sutton said this is believed to be Victoria’s first confirmed case of human-to-human transmission.

The third case is a man in his 70s who arrived in Melbourne on March 8 on flight VA24 from Los Angeles.

Authorities are working to contact people who were in close proximity to the patients on the two flights.

These new cases bring the state’s total number of coronavirus patients to 18.

The new Queensland cases bring the state’s total to 18.

Across Australia there has been 103 confirmed cases.