78 people are to be quarantined after coming in contact with measles.  

Health New Zealand's said it's reached out to 286 close contacts since the first case was confirmed earlier this month.  

90% of people unvaccinated that come in contact with measles will be infected.  

Dr Bryan Betty said it's one of the most contagious diseases known to man.  

He says Covid has a reproduction number of 2-3 and influenza is 1.3, so measles sitting at 12 to 18 is completely off the scale. 

Betty says people should limit their movements.  

He says if people think they have measles, they should ring their medical centre for advice as they risk spreading the disease if they turn up to their medical centre. 

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