Table 1

The presence of DENV-2 antigen in the tracheal system correlates with early dissemination in Chetumal mosquitoes


2dpi
3dpi
5dpi
7dpi

DENV-2 infection
Trachea
Trachea
Trachea
Trachea


(+)
(-)
(+)
(-)
(+)
(-)
(+)
(-)
Disseminated
5
1
10
4
16
2
5
12
Non-Disseminated
1
12
2
8
1
3
2
3
Total
6
13
12
12
17
5
7
15
χ2
10.87
6.17
7.28
0.199
Significance
ρ < 0.001
ρ < 0.01
ρ < 0.01
ρ >0.05

The association of detection of viral antigen in the tracheal system with early dissemination of the virus was analyzed using 2 × 2 tables for each dpi. The criterion for dissemination of infection was detection of viral antigen in non-midgut tissues, including head squash tissues, fat body, and salivary glands.

Salazar et al. BMC Microbiology 2007 7:9   doi:10.1186/1471-2180-7-9