Image copyright Getty Images Image caption Electricity and heat generation in the village of Le Soleil. Le Soleil has been without power since 3 March
Quebec’s health ministry says more than 800 people have been diagnosed with carbon monoxide poisoning in the first eight days of the province’s power blackout.
It said hospital operators were treating 450 people for CO poisoning, and that it was the highest number recorded in a single week.
The cases come a day after three people died in a cottage fire in Saint-Hilaire, which had been without power since the blackout began.
The blackout began when snow, ice and heavy winds brought down lines.
The deaths in the cottage come in addition to four confirmed deaths, two after heart attacks, and one who took his own life.
Quebec’s health minister, Gaetan Barrette, said one of the sickened were in intensive care but was in stable condition.
Canadian power company Hydro-Quebec has said a total of 556 homes and businesses have been evacuated.
There are still 13,000 Hydro-Quebec customers in the dark. There is no estimate of when the power will be restored.
It may take a couple of weeks before people in rural areas regain power.