It comes after a record number of unaccompanied children crossed the Channel to the UK on Friday.
The advice follows a "significant" spike among under-30s as tighter restrictions come into force.
James Nash was described as a "kind-hearted individual and a proactive parish councillor".
The number includes 39 in the NHS Grampian area where there is a growing cluster of cases in Aberdeen.
People could be without water to drink if usage is not curbed this weekend, a water firm warns.