The fist victim of the Edinburgh Legionnaire's outbreak has been named as Robert Air, 56, from the Seafield area of the city.
Mr Air had reportedly been working as a labourer on a building site in Gorgie before becoming unwell and died within hours of being admitted to hospital.
The father-of-two died on Tuesday in Edinburgh Royal Infirmary after his brother Ronald urged him to seek medical attention.
Today Health Secretary Nicola Sturgeon updated MSPs on the outbreak which has seen 21 people confirmed with the disease, with 12 patients critically ill.
Earlier, Labour MSP for the Lothians Sarah Boyack said people wanted clearer information about the outbreak earlier.
She said: "I understand the first incident was May 28. It took until Sunday before we had the response from NHS Lothian.
"So the main response people have had is just nervousness and a wish for more clear, accurate information.
"Getting information out as soon as possible was key.
"Now we want to look to see where the incident actually arose so that all public health lessons can be learned for the future."
But Marco Biagi, whose Edinburgh Central constituency includes part of the affected area, defended the response of the authorities.
He said: "There are concerns, it's a very serious incident. But the advice is the same as it has been since Sunday: anybody showing flu-like symptoms should contact NHS24 or their GP in order to have things checked out."
The SNP MSP argued that the authorities reacted "incredibly swiftly" to the outbreak.
Mr Biagi said: "There were individual cases that happened before Sunday but there are always individual cases of Legionnaires' every year in Scotland.
"It was on Sunday that it was clear there was a cluster developing and by the end of Sunday the first potential sources in the towers had been identified and treated.
"Today a leaflet is going out to every single household in the affected area giving information about symptoms and who to contact. I think the response has been very, very strong and very, very rapid."
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