More than 2000 people in French Polynesia have contracted dengue type 2 since the start of the epidemic in February.
Photo: SCIEPRO/SCIENCE PHOTO LIBRARY
Latest figures show that most new cases are among people under the age of 20.
Of those who fell ill in the past month, 10 have been put into hospital care.
Thirteen islands, including Tahiti, are deemed to be in an epidemic phase while another four are on alert.
Residents are being urged to eliminate the mosquito breeding sites amid concern that the wet season will worsen the problem.
The last dengue type 2 epidemic to hit French Polynesia was about 20 years ago, which means about half the population is at risk of getting infected.
The current dengue strain was brought to Tahiti by a traveller from New Caledonia, where the epidemic was declared to be over in September.
Last week, Wallis and Futuna declared an epidemic after a recent rise in the number of infections.
The World Health Organisation has said that 2019 has been worse than usual for dengue fever in the Pacific.
Before 1970, only nine countries had experienced severe dengue epidemics but now the disease is endemic in more than 100 countries.