Table 3.

Aedes aegypti and Ae. albopictus mortality rates 24 h after exposure to insecticides at diagnostic doses

	Mortality rate (%)
	0.06% Deltamethrin		4% DDT		0.3% Propoxur		0.5% Fenitrothion
	Assay	Control	Assay	Control	Assay	Control	Assay	Control
Ae. aegypti
Garoua	100 (89)	2 (50)	96.8 (95)	8 (50)	100 (100)	8 (50)	100 (99)	2 (50)
Bertoua	100 (100)	2 (50)	-		-		100 (98)	2 (50)
Yaoundé	100 (95)	4 (50)	-		-		100 (96)	4 (50)
Bafia	100 (97)	4 (50)	-		-		100 (97)	4 (50)
Libreville	100 (97)	0 (50)	70.7 (99)	0 (50)	99 (100)	0 (50)	100 (99)	0 (50)
Ae. albopictus
Bertoua	100 (80)	0 (50)	80.5 (87)	8 (50)	100 (94)	8 (50)	100 (61)	0 (50)
Yaoundé	83.3 (96)	2 (50)	36.3 (91)	12 (50)	100 (96)	12 (50)	100 (98)	2 (50)
Buea	100 (50)	4 (50)	47.0 (85)	2 (50)	100 (92)	2 (50)	100 (50)	4 (50)
Reference strain	100 (96)	2 (50)	-		-		100 (100)	2 (50)

Numbers in brackets indicate the number of mosquitoes assayed; -: sample not assayed.