Table 1. Entomological parameters estimated from the indoor resting Culex quinquefasciatus, Tirukoilur, India.

Treatment in village	Period	Mosquitoes caught per worker hour	Number dissected	Number infected (%) with 95% CIa	Number infective (%) with 95% CI	Mean number of third-stage larvae (L3)	Transmission intensity indexb
Mass drug administration (MDA) alone	July 1999–March 2002	23.70	2108	44 (2.09)c [1.6–2.8]	9 (0.43)d [0.02–0.8]	3.44	0.3486
	April 2002–August 2005	39.15	3073	43 (1.40)c [1.0–1.9]	6 (0.20)d [0.1–1.9]	4.33	0.3312
MDA with vector control	July 1999–March 2002	1.49	373	6 (1.61)c [0.7–3.5]	2 (0.54)d [0.1–1.9]	1.00	0.0080
	April 2002–August 2005	0.83	354	3 (0.85)c [0.3–2.5]	0 (0)d [1.1]	0	0

^a 95% binomial confidence interval.
^b Transmission intensity index = mosquitoes caught per man hour x proportion infective x mean L₃.
^c No significant difference among % infected (based on χ² or Fisher’s exact test).
^d No significant difference among % infective (based on χ² or Fisher’s exact test).