Since the beginning of December, there have been 30 cases of the Salmonella Newport infection across the UK.
Four of the five infections in Scotland were in children under six years old, while the fifth patient was an adult.
The same strain has also been found in the Republic of Ireland and Germany, Health Protection Scotland (HPS) said.
Infection with Salmonella Newport causes a similar illness to other forms of salmonella. Symptoms include diarrhoea, vomiting, abdominal pain and fever.
Most people recover within four to seven days.
Investigations into the source of the outbreak are continuing - but HPS said no new cases had been reported in Scotland since the first week of January.
