La réémergence du chikungunya à La Réunion en 2010: évolution des actions de lutte antivectorielle

Abstract

The re-emergence of local transmission of chikungunya virus caused by Aedes albopictus since March 2010 in the Réunion Island, French territory in the southwest Indian Ocean, calls for better epidemiological surveys, vector control, and community-based chikungunya control. This paper describes the strategy and the new ways of vector control applied since the last major chikungunya virus outbreak in 2005-2007, and the high levels of collaboration with mayors and local associations for community involvement. Between March 17, 2010 (first chikungunya case) and July 1, 2010, 313 cases were investigated, 13,036 premises inspected, and 34,393 premises concerned by spatial treatment. The traditional entomologic indices don't explain the distribution map of chikungunya cases, and many other factors have to be measured for evaluating the risk of transmission, such as lifestyle, habitat, and the kind of environment the people live in. A big information campaign was conducted beside the implementation of traditional mosquito control techniques. The two themes of this campaign are environmental management and individual protection, considered as important components of chikungunya prevention. The outcome of the mosquito control strategy demonstrates that community participation is not enough, and more studies are required to define new ways of communication for promoting community-oriented activities to prevent chikungunya epidemics.

Modeling Insect-Repellent Use for Chikungunya Disease Prevention Among US-Caribbean Travelers

“…Although the use of mosquito repellents on skin and clothing is generally considered effective in preventing Chikungunya, its sociodemographic and behavioral correlates, particularly among US travelers to Caribbean destinations, has remained largely understudied. Dehecq et al 17 suggested that the evaluation of Chikungunya transmission risk should be extended beyond traditional entomologic indices to include individual and environmental risk factors.…”

Overview of dengue outbreaks in the southwestern Indian Ocean and analysis of factors involved in the shift toward endemicity in Reunion Island: A systematic review

“…In Reunion, since 2007, vector control programs are performed using Bti ( Bacillus thuringiensis var. israelensis toxins) for larval control and deltamethrin (pyrethroids) against adults [ 58 ]. In Mauritius, in addition to deltamethrin-based adulticide treatments, temephos (organophosphate) is used against larvae.…”

The Copepods (Crustacean: Copepod) and Fish (Osteichthyes) That Inhabit in the Fluvial Ecosystems from Sancti Spíritus Province, Cuba

“…The great epidemics of dengue and malaria occurred in the last years were an example [5]- [7]. Moreover, the epidemics by the chikungunya virus spread by Aedes albopictus and Aedes aegypti mosquitoes in the isles La Reunion and Mauricius during [2005][2006], with an estimated of 266,000 infected persons and 248 deaths [8] and the one occurred in the summer of 2007 in Italy, where more than 200 cases were diagnosed [9] [10].…”