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Legionnaire's disease kills 3 in Quebec City

The deaths of three people from legionnaires' disease have prompted public health officials to urge a scrubbing of cooling systems in tall buildings near the provincial legislature.

The deaths of three people from legionnaires' disease have prompted public health officials to urge a scrubbing of cooling systems in tall buildings near the provincial legislature.

Thorough inspections are planned for almost two dozen cooling systems in buildings in the area where the outbreak is believed to have originated. The checks are expected to start on Tuesday.

Dr. Francois Desbiens, regional director of public health, said Monday the bacterial infection has resulted in 40 cases of the respiratory illness in the provincial capital since July.

Two men and one woman have died.

The bacteria grow in stagnant water in the cooling units used in large buildings before circulating in air-conditioning systems.

It then passes into the air as fine droplets.

Inhalation of the droplets is generally not a problem for people in good health but can affect heavy smokers or those with weakened immune systems.

Symptoms include a high fever and breathing problems.

Desbiens said there are usually two or three cases of legionnaires' disease every year.

The current group of patients is on average 62 years old and there are two men for every woman. Two men and one woman died.

"These are people who lived at home," Desbiens said of the cases.

"Most had a chronic illness or were heavy smokers. There are two or three younger cases who had no contributing risk factors except working in the area."