Effect of an intervention in storm drains to prevent Aedes aegypti reproduction in Salvador, Brazil

Scheme of Piat？ storm drains before (a) and after (b) the intervention. In a, standing water is shown accumulated in the bottom of the storm drain. In b, the bottom of the storm drain is filled with concrete, allowing water outflow through the drain tube, and metal mesh is installed to prevent debris from clogging into the drain tub