TORONTO — Canadian health officials said Wednesday a fatal case of H5N1 bird flu has been reported in Canada, the first such case in North America. The victim was traveling from China when symptoms first appeared.

Health Minister Rona Ambrose said the case, in Alberta, was an isolated one and that the risk to the general public is very low.

Officials said the person began to feel ill on a flight to Canada from Beijing on Dec. 27.

“This is the first evidence of this particular virus circulating in Beijing. Chinese authorities are going to be very interested. We’ve contacted them already,” Dr. Gregory Taylor said.

Taylor said the victim visited only Beijing while in China. The victim did not travel to a farm or visit markets, he said.

The World Health Organization says that as of mid-December, there had been 648 laboratory-confirmed human cases of H5N1 flu, reported mostly in Asia. Of that total, 384 infections have been fatal.

Experts are cautious when it comes to bird flu viruses infecting humans, and have been closely watching the H5N1 bird flu virus. Most human infections are linked to contact with infected poultry. While the virus in its current form is not easily caught, scientists fear it could mutate and spread rapidly among people, potentially sparking a pandemic.

Officials declined to release the sex of the victim, who died Jan. 3. They said they don’t know how the person contracted the virus.

There is no evidence that anyone else was infected by the victim. Dr. James Talbot, Alberta’s chief medical officer of health, said that family members of the victim are being monitored and treated with medication, but noted that there’s nothing to indicate they are sick.

Talbot said two companions traveled with the victim but have shown no signs of becoming sick.

“This is not a disease that’s transmitted between humans, so unless you were infected in the area and were in contact with an infected bird you are not going to get this illness,” Dr. Theresa Tam of Health Canada said.