The number of deaths linked to the chikungunya virus is estimated at 113. And all of the fatalities are reported in the Caribbean.
The latest figures from the Pan-American Health Organisation (PAHO), which include statistics as of Sept. 12, confirm the Caribbean region's vulnerability to the disease.
The PAHO report says, however, that it was not yet clear if these deaths were directly attributable to the virus.
Chikungunya itself is not fatal but can result in death when combined with other serious medical conditions. Although all the victims were infected with the virus, health authorities said Chikungunya may not have been the main cause of death.
The Puerto Rican Health Department was investigating whether two recent deaths were related to the virus, Fox News Latino reported.
PAHO confirmed 55 deaths linked to the virus in Martinique since last December, when the disease was first detected in the French side of St Martin.
Forty-nine deaths were reported in Guadeloupe, six in the Dominican Republic and three in St. Martin, where the virus was first found in the Americas.
A total of 644,686 suspected and 9,640 confirmed Chikungunya cases have been reported in the region as of Sept. 8, the Caribbean Public Health Agency, or CARPHA, said.
The regional organisations emphasised the importance of taking preventive measures to control the breeding locations of the mosquitoes that transmit the two viruses, especially at this time of year, the peak transmission season in the Caribbean due to increased rainfall.