Two new cases including Auckland Grammar boy spark warning to be watchful.
Auckland's public health authority fears a highly infectious measles virus may be starting to spread in the city independently of imported cases of the disease.
Until now, cases in the city's dose of measles - a potentially serious illness - have been traced to imported illness from hotspots such as the Philippines.
But two cases have been diagnosed in which inquiries by the Auckland Regional Public Health Service had not, by the end of last week, turned up any connection to the imported lines of the virus.
"At the moment these two cases are classified as community spread, acquired in New Zealand - we don't know where from," medical officer of health Dr Richard Hoskins said yesterday. "It is an indication it may be starting to spread in our community and that there are missed cases that haven't been diagnosed or notified.