. Author manuscript; available in PMC: 2015 Aug 13.

Published in final edited form as: J Med Entomol. 2012 Nov;49(6):1430–1441. doi: 10.1603/me12103

Table 8.

Theoretical vectorial capacity values computed tor Culex pipiens and Cx. tarsalis mosquitoes feeding on West Nile virus-infected common grackles whereby the potential effect of concurrent Chandlerella quiscali microfilaremias (MF) on increasing the vector competence and simultaneously reducing the extrinsic incubation of the virus has either been invoked (VC_YES) or has been ignored (VC_NO) in the calculations

State	Reported MF	Culex pipiens		Culex tarsalis
State	prevalence (n)	VC_YES	VC_NO	VC_YES	VC_NO
Ohio	22% (40)	0.23	0.13	0.71	0.63
Indiana	100% (184)	0.59	0.13	0.99	0.63
Illinois	98% (203)	0.58	0.13	0.98	0.63
Iowa	62% (112)	0.42	0.13	0.85	0.63
Arkansas	87% (71)	0.54	0.13	0.95	0.63
North Dakota	19% (58)	0.22	0.13	0.70	0.63
Average (±SD)	80% (668)	0.43 ± 0.17	0.13	0.86 ± 0.13	0.63

Calculations take into account the regional variation in MF prevalence (see Fig. 1) and different rates of MF penetration between Cx. pipiens and Cx. tarsalis (see Tables 6 and 7). See Appendix for parameter estimations.