Health officials have told a Senate committee in Pago Pago that the total number of people infected by chikungunya had reached 501 compared to about 390 two weeks ago.
Senator Soliai Tuipine Fuimaono says it is time for health officials to seek help from the Centres for Disease Control and Prevention.
However our correspondent Monica Miller says the Department of Health reports it has done a major clean up in villages and the department is in touch with CDC officials on a weekly basis.
"I think it is beginning to stabilise according to the numbers. They are just stressing that - there is no cure for this. The key is prevention and I think people are now more aware of what is going on."
Our correspondent, Monica Miller.