Four more people in Canada have died after contracting the A/H1N1 flu, bringing total of such deaths to 20, health authorities said Wednesday.

A teenage boy from national capital Ottawa who had underlying chronic health problems is one of two more Ontario residents who have died after getting the flu.

Lab tests have also confirmed that a 52-year-old woman from eastern Ontario died after contracting the virus. The woman also had chronic pre-existing medical conditions, Ontario health officials said.

Health officials in Quebec said two more people in the province have died after getting the A/H1N1 flu, bringing the provincial total to 11.

The total of confirmed cases of A/H1N1 flu in Canada now stands at 6,457, according to the Public Health Agency of Canada.

(Xinhua News Agency June 25, 2009)