On Friday six people tested positive for the coronavirus, bringing the total to 51.
13 of the cases are currently in hospital.
Last week a 68 year old woman became the first Covid-19 death in the region.
There are also at least 36 people from the USS Theodore Roosevelt who have tested positive for Covid-19 which is docked in Guam.
Figures on the military aircraft carrier were not included in the US territory's official count.
The USS Theodore Roosevelt had more than 5,000 people on board.