Dr. Peter Donnelly, with Public Health Ontario, says it's likely someone in Canada will contract the potentially lethal virus.
The officials said at a press conference Saturday evening that the patient was a man in his 50s, who was in stable condition at a Toronto hospital.
The health officials said it is a relatively small family situation, though they declined to give a number, and there is very little by way of contact.
Two coronavirus cases have been confirmed in Australia and the US.
The head of Quebec's public health authority said Wednesday five people in that province were under surveillance for possible exposure.
"Anyone who is concerned they may have been exposed to, or are experiencing symptoms of the novel coronavirus, particularly if you have travelled to areas of China where the virus is active or been in contact with ill people from that area, should contact their health-care provider, local public health office or call 811".
Toronto Mayor John Tory stressed in a statement following news of the city's first coronavirus case that health officials have made it clear the risk continues to remain low.
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The thought of losing someone like Kobe Bryant so young was unimaginable, so many Bears players hoped it wasn't true. ESPN's Adrian Wojnarowski independently confirmed the report.
James passes Bryant for third on career scoring list
A five-time NBA champion with the Los Angeles Lakers , Bryant was considered one of the greatest basketball players ever. Just to make a long story short, now I'm here in a Lakers uniform, in Philadelphia, where he's from.
S. Korea reports 3rd confirmed case of Wuhan coronavirus
A newly identified coronavirus pandemic has been ravaging China over the past few days and it is now in other countries. However he said it has a major weakness - people can have the virus for a week or even two before they show symptoms.
While no cases of the virus have been reported in Canada, public health officials have warned that might change soon. This makes it the first case in Canada, pending confirmation of the result by PHAC's National Microbiology Laboratory in Winnipeg.
Malaysia reported their first cases of the virus Saturday and Japan confirmed a third case.
Federal Health Minister Patty Hajdu echoed the sentiment in a written statement, saying officials are taking all necessary precautions.
Coronaviruses are a large family of viruses that most often cause mild-to-moderate upper respiratory tract illnesses including the common cold, but they can also lead to severe diseases.
As the new coronavirus claims more lives in China, health authorities in this country are trying to reassure Canadians that plans and procedures are in place to protect them. Toronto was hit hard by the outbreak.
SARS and MERS came from animals, and this newest virus nearly certainly did, too. The first people infected visited or worked at a seafood market in the Chinese city of Wuhan, which has been placed under quarantine since the outbreak.