The Health Emergency Advisory Committee said Alert Level 3 is now in place after a Covid-positive case was confirmed this week.
New measures are also now in place for Maewo including a curfew from 6pm to 6am.
Only essential services are allowed to operate with standard operating procedures and social gatherings are banned.
All schools will continue to operate as normal with standard operating procedures.
The public is urged to wear a mask when going to public places.
