In the last week of March, a total of 519 children were identified as cases.
Figures taken in the last week, however, have seen up to 1500 children reporting into paediatrics care with the flu, he said.
The number of confirmed cases of flu have now reached more than 2400 - the majority being young children.
American Samoa also dealing with health emergency
Samoa’s flu outbreak comes as neighbouring American Samoa is also dealing with a health emergency - a measles outbreak.
Schools in the US territory have been closed and children banned from attending public gatherings and church services in a bid to contain the spread of measles.
A public health emergency has been declared in American Samoa and as a result of the measles situation there, Samoan authorities have put a travel restriction in place.
From Monday, anyone travelling from American Samoa to Samoa must be vaccinated against the highly contagious disease and show proof of vaccination.
The new rule includes babies as young as 6 months old.
Samoa’s swift move comes after 83 people died from a measles outbreak, in 2019, that affected thousands of people in the island nation - the majority of them young children.
The majority of deaths were also children.