An Australian woman trapped on a coronavirus-plagued cruise ship off the coast of Japan is concerned about the health of her elderly husband as they remain quarantined on board.

The woman found out on Friday that she has tested positive for the disease, while her husband, aged in his seventies, tested negative, she told ABC News.

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But she fears her husband could still contract it, and worries about what will happen to him when she is transported to hospital for treatment.

“He is very anxious and very upset and he will need assistance,” the woman, who remained anonymous, told the ABC.

“He can’t come with me as there isn’t room, and obviously it would be dangerous,” she said.

“He was tested negative but … he’s asked to be retested because obviously he’s been in close contact with me. My concern is if he has the virus it will go to his chest … he is quite old.”

The woman said she not experienced any major symptoms, saying it feels like she has a “low-grade infection”.

The ABC published photos the woman had shared of the view from her room, which showed ambulances lining up on the dock in Yokohama.

She also shared a photo of a thermometer; the item was being handed out to all passengers, who were instructed to notify authorities if their temperature rose over 37.5 degrees.

Japan on Friday confirmed 41 new cases of the virus on the quarantined Diamond Princess, adding to 20 escorted off the ship earlier.

The nearly 3,700 passengers and crew still on board remain under 14-day quarantine.

Prime Minister Shinzo Abe said foreign passengers on another ship, Holland America’s Westerdam, won’t be allowed into Japan.

He said suspected virus patients were on board. The ship, with more than 2,000 people, was near Okinawa and was seeking another port, said Overseas Travel Agency official Mie Matsubara.

“We are getting desperate,” she said.

“We hope we can go somewhere so that passengers can land.”

Meanwhile in Hong Kong, 3,600 people are facing a third night confined aboard the World Dream, where eight former passengers have tested positive for the virus.

While global concerns mount, WHO chief Tedros Adhanom Ghebreyesus warned that the world was facing a “chronic shortage” of masks and other protective equipment.

Apple contractor Foxconn saidon Friday it would start making face masks alongside iPhones at its Shenzhen factory, aiming for 20 million by the end of February.