The latest reports from American Samoa reveal Chikungunya-related cases have now reached over 700 and there is now one probable case in Ofu, Manua.
The virus was discovered in the territory in July but there have been no reported cases in Manua until now.
Health officials are urging residents not to travel to Manua if they have Chikungunya and testing is being done to determine whether the case in Ofu is due to the virus.
Since July there have been 11 hospitalisations with the virus but no deaths.
Health officials continue to urge those with symptoms to drink plenty of fluids, get a lot of rest and visit the emergency department if symptoms become serious.