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 4 Relative recapture of competing human landing catch (HLC) in the presence of HLC, mosquito-electrocuting traps (METs) and BG-Sentinel (BGS) traps in a choice test in the presence of two freestanding transfluthrin passive emanators (treatment) and with no transfluthrin (control)

Trap combination	Transfluthrin				Control
Trap combination	HLC recapture position 2 (% of recapture)	Recapture in position 2 relative to HLC in position 1^a	OR (95% CI)^b	P-value	HLC recapture position 2 (% of recapture)	Relative recapture in position 2 relative to position 1^a	OR (95% CI)^b	P-value
HLC + HLC	194 (48)	1	1	–	376 (53)	1	1
MET + HLC	210 (91)	1.08	1.15 (0.72–1.84)	0.547	384 (80)	1.02	1.06 (0.85–1.33)	0.593
BGS + HLC	269 (88)	1.39	1.63 (0.79–3.34)	0.184	565 (91)	1.50	3.37 (2.35–4.85)	< 0.0001

The average proportion of released mosquitoes that was recaptured by each method by HLC in position 2 is presented out of 800 A. aegypti mosquitoes released over eight replicates
^aRelative recapture in HLC position 2 when HLC is conducted in position 1 compared to the MET and BGS trap in position 1 in both the treatment and the control arms
^bThe odds ratio (OR) estimates were derived from Stata output adjusted for temperature and humidity and presented with a 95% confidence interval

ISSN: 1756-3305