Legionnaires' outbreak: second company ordered to clean up Macfarlan Smith, a pharmaceuticals firm based in Wheatfield Road in the south-west of Edinburgh where most of the cases originated, was served two improvement notices by the Health and Safety Executive. Improvement notices were served because the company allegedly failed to maintain control measures for the safe operation of the cooling tower to the required standard. Nicola Sturgeon, the Scottish Health Minister, said: "Today's developments, which show a slight increase, are in line with expectations. With a 14-day incubation period, we would expect there to be fluctuations over the next week or so. It is reassuring however that all those involved are continuing to respond well to being treated.