Voltage-Gated Sodium Channel (Vgsc) Mutation-Based Pyrethroid Resistance in Aedes aegypti Populations of Three Endemic Dengue Risk Areas of Sri Lanka

Table 3

The S989P genotyping and frequency of kdr alleles in Sri Lankan Ae. aegypti.

District	Year	Total number of mosquitoes	Genotype			Allele frequency
			PP	PQ	QQ	P	Q
Colombo	2018	158	136 (86.1%)	19 (12.0%)	03 (1.9%)	0.92	0.08
	2019	192	158 (82.3%)	27 (14.1%)	07 (3.6%)	0.89	0.11
Gampaha	2018	165	146 (88.5%)	14 (8.5%)	05 (3.0%)	0.93	0.07
	2019	179	152 (84.9%)	19 (10.6%)	08 (4.5%)	0.90	0.10
Kandy	2018	127	117 (92.1%)	10 (7.9%)	00 (0%)	0.94	0.04
	2019	153	140 (91.5%)	11 (7.2%)	02 (1.3%)	0.95	0.05