Canadian health officials are investigating an outbreak of Salmonella in six provinces that has sickened 63 people, including 18 who have been hospitalized and two deaths.

People who became ill range in age from one to 87. Individuals became sick between November and March.

The Public Health Agency of Canada said the breakdown of known cases as of Friday includes 23 people in B.C., ten people each in Alberta, Manitoba and Ontario. There are eight cases in Saskatchewan and two in Quebec.

The agency said the source of the bacterial infection has not been identified.

Salmonella is a common bacterium that causes intestinal illness. Symptoms may include chills, diarrhea, abdominal cramps, fever, nausea, and vomiting.

It is usually caused by eating contaminated foods that have not been cooked properly but can also be spread from one person to another if people don’t wash their hands after using the bathroom.