Fig. 4From: Long-lasting insecticidal nets retain bio-efficacy after 5 years of storage: implications for malaria control programmesWHO bio-assay results against resistant An. arabiensis (Kingani strain). a Percentage KD60, b WHO cone assay percentage 24-h mortality. c Tunnel test percentage 24-h mortality. d Percentage blood-feeding inhibition. In all graphs the dashed line is the WHO cut off criteria, 95% for KD60, 80% for mortality, and 90% for blood-feeding inhibition. c, d Do not have 95% CI, since only one sample per condition that failed in cone bioassays was re-tested in WHO Tunnel test as per WHO guideline [8]Back to article page