Semi-field evaluation of the exposure-free mosquito electrocuting trap and BG-Sentinel trap as an alternative to the human landing catch for measuring the efficacy of transfluthrin emanators against Aedes aegypti

Table 3 Diversion of mosquitoes from human landing catch (HLC), mosquito-electrocuting traps (METs) and BG-Sentinel (BGS) traps in position 1, located 3 m from freestanding transfluthrin passive emanators (FTPEs) or control to a person conducting HLC in position 2, 10 m from FTPEs or control

Trap combination	Transfluthrin					Control
Trap combination	“Trap” recapture position 1	HLC recapture position 2	Recapture in position 2 relative to position 1	OR (95% CI)^a position 2 relative to position 1	P-value	“Trap” recapture position 1	HLC recapture position 2	Recapture in position 2 relative to position 1	OR (95% CI)^a position 2 relative to position 1	P-value
HLC + HLC	208	194	0.93	0.87 (0.66–1.15)	0.324	335	376	1.12	1.26 (1.02–1.55)	0.030
MET + HLC	22	210	9.55	91.1 (49.0–170.0)	< 0.0001	96	384	4.00	16.0 (11.66–22.0)	< 0.0001
BGS + HLC	38	269	7.08	50.1 (31.0–81.0)	< 0.0001	53	565	10.66	113.6 (76.3–169.2)	< 0.0001

The percentage of released mosquitoes recaptured by each method is presented out of 800 Aedes aegypti mosquitoes released over eight replicates. The proportion recaptured is the arithmetic mean recaptured out of the total released
^aThe odds ratio (OR) estimates were derived from Stata output of position 2 relative to position 1 in the presence of transfluthrin or control, adjusted for temperature, humidity, compartment and volunteers and presented with 95% confidence interval

ISSN: 1756-3305