Three new cases of measles have been notified to health authorities in Southland, following the visit to Dunedin last month of a Wellington student who was subsequently found to be infectious.
Southland District Health Board says the three cases are all young children who had not been immunised.
The children have been isolated for 14 days.
The Southern DHB is urging parents to have their children fully vaccinated against the highly infectious disease.
The vaccination is given at 15 months and four years.
The DHB says anyone with a high temperature, tiredness, running nose and inflamed eyes should stay home and phone their doctor.