An experimental hut study to quantify the effect of DDT and airborne pyrethroids on entomological parameters of malaria transmission

Table 7 Mortality of mosquitoes collected from exit traps compared to those collected inside experimental huts

Treatment	Mosquitoes in exit traps			Mosquitoes indoors
	Dead mosquitoes/total mosquitoes	Median¹	IQR	Dead mosquitoes/total mosquitoes	Median²	IQR
Control	91/313	0.35	0.19 – 0.43	102/754	0.15	0.09 – 0.18
DDT	286/581	0.52	0.30 – 0.75	550/604	1.00	0.94 – 1.00
Transfluthrin coils	273/599	0.49	0.34 – 0.55	454/468	1.00	1.00 – 1.00
Metofluthrin coils	333/581	0.35	0.25 – 0.73	430/512	1.00	1.00 – 1.00

Legend: The proportion of mortality induced by insecticides was measured in experimental huts in a semi field system for 16 nights. Mortality was compared between huts that had mosquito coils, DDT and no insecticides.
Median¹ – median proportion of mosquitoes in exit traps per hut per night; IQR – Interquartile range; Median² – median proportion of mosquitoes inside each hut per night.

ISSN: 1475-2875