Dengue is a viral illness transmitting by mosquitoes; and causing fever, pain, rash; and other flu-like symptoms. Severe cases requiring hospitalization; but placing an economic burden on areas where dengue is finding. While a new dengue vaccine raised hope about reducing the impact of the disease; the vaccine’s risks have limited its use; maintaining the focus on control mosquito populations to halt the spread of the disease.
This study evaluated the impact of the mosquito control intervention; from June 2014 to December 2016 in an urban region in western Sri Lanka highly affecting by dengue. The researchers analyzing the rates of dengue in symptomatic patients in the presence and absence of the intervention; adjusting for climate variables, including rainfall and temperature; to measure the program’s impact.
Mosquito control program
Dengue is particularly prevalent in countries in south Asia and has become a major public health problem in Sri Lanka, which has seen a dramatic increase in the disease in recent years. In response, in 2014, Sri Lanka’s Ministry of Health started a proactive mosquito control program in partnership with its military and police forces.
But the program aimed to reduce mosquitos in high risk communities; by conducting door-to-door inspections on a large scale. Teams made up of a combination of public health authorities, police, and military personnel inspected at least 50 locations daily in order to identify; and remove mosquito breeding sites, such as containers of stagnant water around homes.
Evaluating the effectiveness and cost effectiveness of population-level interventions is essential for guiding public health planning and empowering policy makers to deploy the most effective and efficient interventions, particularly in resource-limited settings.
The mosquito control program had a significant effect on larval mosquito populations in the region as well as on dengue; with researchers measuring a 57% reduction in dengue incidence. They estimate that 2,192 cases of dengue were averted during the 31-month intervention. Study suggesting that communities affecting by dengue can benefit from investments in mosquito control; if interventions are implemented rigorously and coordinated across sectors. By doing so, it is possible to reduce the disease and economic burden of dengue.