As of this week, there were 394 cases of the disease with two people remaining hospitalised.
Earlier this month, Ministry of Health chief executive Siale 'Akau'ola said his ministry could need to re-vaccinate up to 15,000 people after some historical immunisation appeared to have been ineffective.
Dr 'Akau'ola said the campaign was continuing, with great success.
"We're still vaccinating above six months up to one year. We've almost completed that cohort of babies.