The incident happened at the Loch Ness Bay campsite near Drumnadrochit, Highland, on Thursday July 31.
In the NHS Grampian health board area, 14.6 people per 100,000 have a diagnosis as well as noticeable symptoms.
More from us
Did you know with a Plus subscription to Express and Star you get full access to our award winning journalism for the news that matters to you and more.