Research suggests that the dengue virus NS1 protein affects the midgut of Aedes aegypti mosquitoes, potentially facilitating virus dissemination. Studies on Aedes aegypti and flaviviruses, including dengue and Zika viruses, are investigating various factors that influence virus replication and transmission in these mosquitoes. The specific mechanisms and interactions involved in this process are being explored, including the role of host immune responses, viral toxins, and molecular modifications.