ECDC has published Epidemiological update: autochthonous cases of chikungunya fever in the Caribbean region and South America. Click through for a table and links. Excerpt:
On 6 December 2013, France reported two laboratory-confirmed autochthonous cases of chikungunya in the French part of the Caribbean island of Saint Martin. It is the first time that autochthonous transmission of the virus has been documented in the Americas.
An ECDC risk assessment of the outbreak published on 12 December 2013 concluded that the risk of the disease spreading to other islands in the Caribbean region was high. Since then, local transmission has been confirmed on the majority of the islands in the Caribbean and in South America (French Guiana and Guyana).
As of 4 June 2014, there have been more than 100 000 suspected cases in the region with at least 14 fatalities. Of the suspected cases, 4 182 were confirmed in the Caribbean region and 224 in South America.
Outbreak still expanding
In addition to confirmed autochthonous cases, several countries have reported imported cases of chikungunya in patients with travel history to the affected areas: the US (Florida), Barbados, Trinidad, Chile, Panama, France and Italy.
The latest epidemiological data indicate increasing number of cases in most affected countries and that the outbreak is still expanding and reaching new areas. The chikungunya transmission was detected during a concomitant dengue outbreak in the Caribbean. Both arboviruses are transmitted by the same Aedes aegypti mosquito species.
The naïve population, the presence of an effective vector in the region and the movement of people in and between islands and territories are factors that make it likely that the outbreak will continue to spread geographically and continue to increase in numbers.
The conclusions and recommendations of the rapid risk assessment published on 12 December 2013 remain valid. Clinicians and travel medicine clinics should remain vigilant regarding imported dengue and chikungunya cases from the Caribbean, French Guiana and Guyana.