. 2010 Jul;83(1):126–134. doi: 10.4269/ajtmh.2010.09-0776

Table 4.

The mean titers (logs plaque-forming units WNV/mL) ± standard errors, infection rates, and dissemination rates for Cx. p. quinquefasciatus fed blood meals containing a low or high dose at different ages and tested after a 13-day incubation period at 28°C

Mosquito age	No. tested	No. infected (%)^*	No. disseminated (%)^*	Body titer^†	Leg titer^†
1995 Colony—low dose
Young	100	56 (56)^a	16 (29)^a	4.2 ± 0.1^hijk	3.3 ± 0.2^abcde
Middle-aged	82	53 (65)^a	24 (45)^a	4.4 ± 0.1^ghij	2.8 ± 0.2^abcde
Old	81	41 (51)^a	11 (27)^a	4.4 ± 0.1^ghij	3.0 ± 0.3^abcde
1995 Colony—high dose
Young	95	77 (81)^a	49 (64)^a	5.0 ± 0.2^def	3.2 ± 0.2^abcde
Middle-aged	92	79 (86)^a	61 (77)^a	5.8 ± 0.1^a	4.2 ± 0.2^a
Old	89	65 (73)^a	44 (68)^a	5.7 ± 0.1^ab	3.9 ± 0.2^abcd
2007 Colony—low dose
Young	116	75 (65)^b	41 (55)^a	5.4 ± 0.2^abcd	3.8 ± 0.2^abcd
Middle-aged	74	23 (31)^c	8 (35)^a	5.3 ± 0.3^abcd	4.2 ± 0.4^ab
Old	130	128 (98)^a	54 (42)^a	5.6 ± 0.1^abc	3.1 ± 0.1^abcde
2007 Colony—high dose
Young	49	34 (69)^b	27 (79)^a	4.2 ± 0.2^hijk	2.8 ± 0.3^abcde
Middle-aged	49	43 (88)^a	34 (79)^a	5.0 ± 0.2^def	3.0 ± 0.2^abcde
Old	50	20 (40)^c	15 (75)^a	4.9 ± 0.4^defg	2.7 ± 0.3^abcde

Treatment groups with the same letter in the same column for each colony-dose group are not significantly different between ages by χ² test.

^†

Treatment groups with the same letter in the same column are not significantly different by means comparisons across Tables 3 and 4.