The cruise ship Diamond Princess carrying more than 150 passengers suffering from norovirus gastroenteritis docked in Sydney on Thursday morning.
According to local media the ship’s doctor treated passengers and none of them needed to be taken to hospital.
"I just got sick Monday night, vomiting and gastric, Monday night and I was in bed Tuesday," said an unidentified passenger, Reuters reported.
Norovirus is a contagious virus that can be trasmitted by people consuming contaminated food or water, or by touching contaminated surfaces.
The cruise ship, carrying several thousand passengers, arrived in Sydney’s Circular Quay harbour after a 12-day trip to New Zealand.
Local media reported that it is believed passengers were told to stay in their cabins while the crew worked to contain the illness.
Princess Cruises spokeswoman said the illness broke out on the last day of the cruise and around 35 of the ship's more than 2800 passengers were still affected by the bug.
It is the third norovirus outbreak on board a cruise ship in the last two months.
On P&O cruise ship Pacific Eden about 50 of the 1500 people on board were taken ill with norovirus over the Christmas period.
In October on Royal Caribbean's Explorer of the Seas cruise ship more than 170 passengers fell sick with a stomach bug during their eight-day cruise from Sydney to New Zealand.