Effectiveness and feasibility of long-lasting insecticide-treated curtains and water container covers for dengue vector control in Colombia : a cluster randomised trial

The combination of long-lasting insecticide-treated net (LLIN) curtains with targeted interventions on water containers showed a significant reduction in vector densities when measured through pupae per person index (PPI). If a mosquito was able to escape the effects of the curtains, they would still encounter difficulties in laying eggs and, even if successful, the emerging mosquitoes would be killed by treated container covers. This underlines the importance of combined vector control strategies. In the intervention group, the PPI index showed a clear decline of 71% compared with 25% in the control group. Program acceptance was achieved through community participation strategies.