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Table 4 Vectorial capacity (VC) of experimental populations of Cx. pipiens following exposure to WNV WT and WNV MP20

From: The evolution of virulence of West Nile virus in a mosquito vector: implications for arbovirus adaptation and evolution

 

h1

b2

p3

N4

VC= h2pNb/-ln(p)

WNV WT

0.32

0.32

0.98

10

1.00

WNV MP20

0.28

0.44

0.97

10

0.83

  1. 1 mean blood feeding rate.
  2. 2 vector competence (b) = infection rate *dissemination rate.
  3. 3 probability of daily survival.
  4. 4 extrinsic incubation period (N) = mean time in days from infection to transmission.