Skip to main content

Table 2 MIR, DR, SGIR and TR for Ae. aegypti mosquitoes infected with host cell-adapted ZIKV generated

From: Infection, dissemination, and transmission efficiencies of Zika virus in Aedes aegypti after serial passage in mosquito or mammalian cell lines or alternating passage in both cell types

Strain Rate Days post-infection
3 5 7 14 21
Percentage of infected mosquitoes (number infected/number tested)
ZIKV-I MIR 97 (29/30) 70 (21/30) 77 (23/30) 90 (27/30) 80 (24/30)
DIR 14 (4/29) 14 (3/21) 39 (9/23) 89 (24/27) 100 (24/24)
SGIR NT 5 (1/21) 9 (2/23) 89 (24/27) 96 (23/24)
TR NT NT 11 (1/9) 17 (4/24) 4 (1/24)
ZIKV-6C MIR 67 (20/30) 70 (21/30) 83 (25/30) 83 (25/30) 73 (22/30)
DIR 15 (3/20) 10 (2/21) 40 (10/25) 100 (25/25) 100 (22/22)
SGIR NT 5 (1/21) 20 (5/25) 84 (21/25) 86 (19/22)
TR NT NT NT 4 (1/25) 5 (1/22)
ZIKV-6V MIR 27 (8/30) 13 (4/30) 3 (1/30) 1 (3/30) 17 (5/29)
DIR NT NT NT 100 (3/3) 100 (5/5)
SGIR NT NT NT 66 (2/3) 100 (5/5)
TR NT NT NT NT NT
ZIKV-6A MIR 4 (1/28) 7 (2/30) 3 (1/30) 10 (3/30) NT
DIR NT NT NT 67 (2/3) NT
SGIR NT NT NT 67 (2/3) NT
TR NT NT NT NT NT
  1. MIR: midgut infection rate (as number of mosquitoes with ZIKV-positive midguts/number of mosquitoes tested × 100); DIR: dissemination rate (number of mosquitoes with ZIKV in any organ other than the midgut/number of mosquitoes with ZIKV-positive midguts × 100); SGIR: salivary gland infection rate (number of mosquitoes with ZIKV-positive salivary gland/number of mosquitoes with ZIKV-positive midguts × 100); TR: transmission rate (number of mosquitoes with ZIKV-positive saliva/number of mosquitoes with disseminated infections × 100); NT, not tested. DIRs were usually not determined if no more than five of the mosquitoes in the group had midgut infections. Likewise, SGIRs and TRs were usually not determined if no more than five of the mosquitoes in the group contained virus in non-midgut tissues and their salivary glands, respectively. Tissues collected from the ZIKV-6A challenged mosquitoes at 21 dpi were not tested because of the small number of mosquitoes (≤ 3) that had midgut infections on 3 to 14 dpi