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Table 3 Indoor resting density, parity rate, sporozoite and human blood meal index rate of Anopheles gambiae s.l. collected from village clusters with each LLIN intervention 2014/15

From: A village level cluster-randomized entomological evaluation of combination long-lasting insecticidal nets containing pyrethroid plus PBO synergist in Southern Mali

LLIN treatment arm Total resting indoors Collection houses An. gambiae s.l. per room per day (95% CI) P value
Indoor resting density of An. gambiae s.l.
 Permethrin 4624 1440 3.21 (3.16–3.26) 0.001
 Permethrin + PBO 5335 1440 3.70 (3.65–3.76)
 Deltamethrin 2766 1440 1.92 (1.87–1.97) 0.001
 Deltamethrin + PBO 4385 1439 3.05 (3.00–3.10)
LLIN treatment arm Number dissected Number parous Parity rate % (95% CI) P value
Parity rate of indoor resting An. gambiae s.l.
 Permethrin 1577 1242 78.8 (76.7–80.8) 0.08
 Permethrin + PBO 1431 1089 76.1 (73.9–78.3)
 Deltamethrin 1063 837 78.7 (76.3–81.2) 0.05
 Deltamethrin + PBO 1144 862 75.4 (72.9–77.9)
LLIN treatment arm Number tested Number positive sporozoite % sporozoite positive P value
Sporozoite rate of indoor resting An. gambiae s.l.
 Permethrin 1809 98 5.42 (4.37–6.46) 0.06
 Permethrin + PBO 1706 118 6.92 (5.71–8.12)
 Deltamethrin 1311 52 3.97 (2.91–5.02) 0.17
 Deltamethrin + PBO 1645 50 3.04 (2.21–3.87)
LLIN treatment arm Number tested Number positive human % HBI (95% CI) P value
Human blood meal index (HBI) of indoor resting An. gambiae s.l.
 Permethrin 1078 603 55.9 (53.0–58.9) 0.001
 Permethrin + PBO 879 407 46.3 (43.0–49.6)
 Deltamethrin 771 397 51.5 (48.0–55.0) 0.79
 Deltamethrin + PBO 883 449 50.8 (47.6–54.1)