It is the second death of a Canadian with the virus.

Dr David Williams, Ontario's Acting Chief Medical Officer of Health, said in a statement on Monday that a 44-year old man with a chronic pre-existing medical condition died on May 23.

He says it's not clear what role H1N1 flu played in the fatality.

A coroner is investigating.

A 39-year-old Alberta woman with chronic, pre-existing medical conditions, died on April 28.

An autopsy did not show whether the virus played a role.

Canada has more than 850 confirmed cases of H1N1 flu. -- AP