Of these cases, one was a visitor from French Polynesia with dengue type 3, while the others were dengue type 1.
The ministry said authorities have diagnosed four probable dengue cases this week, one of whom recently arrived from Fiji.
It is reminding the public keep home and work environments clean and to safely dispose of water-retaining containers; to avoid mosquito bites by covering up, using repellents and screen doors, and to see a doctor if fever, pain behind the eyes, or muscle aches develop.