Interceptor® long-lasting insecticidal net: phase III evaluation over three years of household use and calibration with Phase II experimental hut outcomes.

At some time points a difference was apparent in insecticide concentration between nets which passed the bioassay criteria (≥80 % mortality) and those which failed it: among the CTN at 12 months the mean concentration was 15.8 mg/m 2 for those which passed and just 7.6 mg/m 2 for those which failed; among the LN at 24 months the mean concentration was 74.5 mg/m 2 for those which passed but only 55.1 mg/m 2 for those which failed.

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