Implications of insecticide resistance for malaria vector control
According to the World Malaria Report 2015, 60 countries have reported resistance to at least one of the four insecticide classes used in long-lasting insecticidal nets (LLINs) and indoor residual spraying (IRS) since 2010; of these, 49 have reported resistance to two or more insecticide classes.
This study summarizes the findings of a five-year evaluation conducted in 340 locations across Benin, Cameroon, India, Kenya and Sudan to assess the impact of insecticide resistance on malaria vector control interventions.
Results indicate that people who slept under LLINs had significantly lower rates of malaria infection than those who did not use a net, even though mosquitoes showed resistance to pyrethroids (the only insecticide class used in LLINs) in all of these areas. The study reaffirms the WHO recommendation of universal LLIN coverage for all populations at risk of malaria.