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Table 1 Infection, dissemination and transmission rates in Cx. annulirostris after exposure to WNV by either oral route or intrathoracic inoculation (IT). Mosquitoes previously infected with PCV were compared to mosquitoes mock infected with growth medium

From: The insect-specific Palm Creek virus modulates West Nile virus infection in and transmission by Australian mosquitoes

 

Infectiona

Disseminationb

Transmissionc

Transmission/Disseminationd

Mode of exposure (virus strain)

WNV

WNV + PCV

WNV

WNV + PCV

WNV

WNV + PCV

WNV

WNV + PCV

Oral (WNVKUN2009)

76

(34/45)

51

(21/41)e

69

(31/45)

51

(21/41)

64

(29/45)

37

(15/41)e

94

(29/31)

71

(15/21)e

IT (WNVKUN2009)

93

(28/30)

100

(30/30)

93

(28/30)

93

(28/30)

90

(27/30)

73

(22/30)

96

(27/28)

79

(22/28)

IT (WNVKUNMRM16)

88

(15/17)

100

(52/52)

Not tested

80

(12/15)

62

(35/52)

Not tested

  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 mosquitoes containing virus in the saliva expectorates (number positive/number tested)
  4. dPercentage of mosquitoes with a disseminated infection containing virus in the saliva expectorates (number positive/number disseminated)
  5. eFisher’s exact test P-value < 0.05 for comparisons between Cx. annulirostris infected with WNV only and those infected with WNV and PCV