Public health Interventions for Aedes control in the time of Zika virus – a meta-review on effectiveness of vector control strategies

Read the full review here

The effectiveness of Aedes control measures is mixed. Use of chemical vector control does not have long term impact, and can induce false sense of security which reduces effectiveness of educational interventions.

The rapid transmission of disease via Aedes mosquitos greatly increases the burden of disease. With the increased prevalence of Zika virus (ZKV), and the scaling back of  yellow fever vaccination, the need to control the Aedes mosquito, which transmits ZKV, Dengue, yellow fever and Chikungunya, is paramount.

This meta-review (a review of systematic reviews) aimed to assess the effectiveness of Aedes control interventions, or controls against Aedes transmitted disease.

Thirteen systematic reviews were investigated. Chemical control is most commonly used, but has not sustained benefit, and has the negative outcome of potentially reducing the effectiveness of educational interventions encouraging local people to remove mosquito breeding sites. Biological controls achieve better reduction of entomological indices; integrated vector control does not always equate to increased effectiveness. Local factors will influence the success of any of the control mechanisms, and success in one country does not guarantee that success will replicate in another country.

The review only searched Scoups and Medline. The quality of the evidence was low to very low for most interventions (much was observational) which might have biased the results.

 

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