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Death toll in Quebec’s legionnaires’ outbreak rises to 10

This 2009 colorized 8000X electron micrograph handout image provided by the Centers for Disease Control and Prevention shows a large grouping of Gram-negative Legionella pneumophila bacteria.

Janice Haney Carr/AP/THE CANADIAN PRESS

An outbreak of legionnaires' disease in Quebec City has claimed its 10th victim.

Public health authorities say there have now been 165 cases since the outbreak began in mid-July.

The Quebec government ordered a public inquiry into the problem earlier this week.

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The source is thought to be the cooling systems of two building towers.

The deadly bacteria grow in the stagnant water of cooling systems and spread in little droplets through air conditioning. Local authorities have disinfected the systems in more than 100 buildings and say the outbreak is now contained.

Public health officials have warned that cases of legionnaires' could still surface among those infected earlier.

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