Aucklanders have been exposed to measles virus by a sick person at four locations.
The region's public health service has warned people to be alert for symptoms of the serious illness if they were at any of the four places - a hostel, a cafe, a medical clinic and a hospital - at specific times.
Medical Officer of Health Dr Michael Hale has confirmed a measles alert linked to the four locations in central Auckland and Newmarket.
Visitors to these places at the listed times are likely to have been exposed to the virus and if they are not immune - from vaccination or a previous dose of the disease - could fall sick with a dose. The locations are times are:
• K Road City Travellers Hostel, Karangahape Rd, August 8-13,
• Zarbo deli & café, Newmarket, August 10, 2.30-5pm and August 11, 9am-2pm,
• The Auckland City Doctors waiting room, Queen St, August 9, 10am-1pm, and
• Auckland City Hospital adult emergency department waiting room August 13, 7am-1pm.