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Table 1 Infection, dissemination and transmission rates in Culex annulirostris exposed to 10 8.1 and 10 7.6 TCID 50 /mL of the WNV KUN2011 and WNV KUN2009 strains, respectively and tested at different time points post-exposure

From: Role of enhanced vector transmission of a new West Nile virus strain in an outbreak of equine disease in Australia in 2011

  Infectiona Disseminationb Dissemination/infectionc Transmissiond Transmission/disseminatione
Day post exposure KUN2011 KUN2009 KUN2011 KUN2009 KUN2011 KUN2009 KUN2011 KUN2009 KUN2011 KUN2009
3 76 (19/25) 64 (16/25) 28 (7/25) 32 (8/25) 37 (7/19) 50 (8/16) 0 (0/25) 0 (0/25) 0 (0/7) 0 (0/8)
5 68 (17/25) 68 (17/25) 60 (15/25) 64 (16/25) 88 (15/17) 94 (16/17) 12 (3/25) 12 (3/25) 20 (3/15) 19 (3/16)
7 64 (16/25) 68 (17/25) 64 (16/25) 52 (13/25) 100 (16/16) 76 (13/17) 28 (7/25) 12 (3/25) 44 (7/16) 23 (3/13)
10 64 (16/25) 44 (11/25) 64 (16/25) 44 (11/25) 100 (16/16) 100 (11/11) 44 (11/25) 40 (10/25) 69 (11/16) 91 (10/11)
12 68 (17/25) 60 (9/15) 68 (17/25) 60 (9/15) 100 (17/17) 100 (9/9) 68 (17/25) 53 (8/15) 100 (17/17) 89 (8/9)
14 52 (13/25) 84 (21/25)* 52 (13/25) 76 (19/25) 100 (13/13) 90 (19/21) 52 (13/25) 72 (18/25) 100 (13/13) 95 (18/19)
  1. aPercentage of mosquitoes containing virus in their bodies (number positive/number tested).
  2. bPercentage of mosquitoes containing virus in their legs and wings (number positive/number tested).
  3. cPercentage of infected mosquitoes containing virus in their legs and wings (number positive/number infected).
  4. dPercentage of mosquitoes containing virus in the saliva expectorates (number positive/number tested).
  5. ePercentage of mosquitoes with a disseminated infection containing virus in the saliva expectorates (number positive/number disseminated).
  6. *Fisher’s exact test P-value <0.05 for day 14 infection rate.