Eliminates female mosquitoes to help curb chikungunya virus
By: Team Ifairer | Posted: 30-07-2019
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A disease control centre developed an Autocidal Gravid Ovitrap (AGO trap) that attracts and captures female mosquitoes looking for a site to lay eggs. Researchers reported that AGO traps successfully protected people from chikungunya virus. The lack of effective tools to control Aedes aegypti mosquito populations has resulted in the continued expansion of dengue virus, Zika virus and chikungunya virus. Some recent attempts at curbing mosquito populations have resulted in reductions in mosquito density but not reductions in human disease.
AGO traps consist of a pail with hay and water to attract egg-bearing female mosquitos and a sticky lining to which the insects adhere. Previous studies have shown that placing three AGO traps outside of 85% of homes in a community resulted in an 80% reduction in adult mosquito populations but the studies did not assess rates of mosquito-borne diseases in humans, reported the study published in the journal of PLOS Neglected Tropical Diseases.
The researchers randomly selected 290 households in Puerto Rican communities that had AGO trap interventions and 349 households in communities without AGO traps. 175 household members from intervention communities and 152 from non-intervention communities were enrolled in the study.
Blood samples were collected from each participant to detect chikungunya virus infection and surveys recorded demographic information as well as data on mosquito repellent and bed net use and frequency of mosquito bites.