Table 1.

Proportion (± 95% confidence interval) of wild-caught Anopheles albimanus that ingested blood when exposed to treated and untreated heifers (Belize, 2018)

Treatment	Number of heifers	Pre-treatment	Day after treatment
			Day 2	Day 5	Day 7	Day 14
Control	2	43 ± 9% N = 108/n1 = 48, n2 = 60	54 ± 10% N = 100/n1 = 50, n2 = 50	62 ± 9% N = 120/n1 = 60, n2 = 60	68 ± 11% N = 71/n1 = 36, n2 = 35	79 ± 6% N = 192/n1 = 96, n2 = 96
Fipronil	3	51 ± 8% N = 144/n1 = 48, n2 = 48, n3 = 48	47 ± 8% N = 150/n1 = 50, n2 = 50, n3 = 50	65 ± 7% N = 176/n1 = 58, n2 = 58, n3 = 60	71 ± 9% N = 102/n1 = 34, n2 = 34, n3 = 34	74 ± 5% N = 288/n1 = 96, n2 = 96, n3 = 96
Ivermectin	1	37% N = 48	24% N = 50	40% N = 57	51% N = 33	85% N = 96
Statistical comparisons	Control vs. fipronil	χ2 = 1.91 p = 0.17	χ2 = 1.07 p = 0.30	χ2 = 0.25 p = 0.62	χ2 = 0.18 p = 0.67	χ2 = 1.38 p = 0.24
	Control vs ivermectin	χ2 = 0.36 p = 0.60	χ2 = 12.2 p = 0.0005	χ2 = 7.7 p = 0.006	χ2 = 2.49 p = 0.11	χ2 = 1.90 p = 0.17

N total number of mosquitoes exposed to a treatment group; n number of mosquitoes exposed per heifer within a treatment group