Of the 61 cases, all in the Edinburgh area, 24 were confirmed,Scottish Health Secretary Nicola Sturgeon told Scotland’s Parliament. The rest were suspected cases.
The illness is contracted by breathing in small droplets of water contaminated with the Legionella bacteria. The symptoms are similar to those of flu, including coughs, fever and chills.
The bacteria can end up in artificial water supply systems, including air conditioning units, water services and cooling towers.
Officials are trying to trace the source of the outbreak, which is centered in an industrial area of the city. The sole death so far was that of a 56-year-old man.
Sturgeon warned that the number of people affected could continue to rise over the next week.