Here’s a concise, informative write-up for — suitable for a medical summary, study note, or public health communication. Write-Up: DNS1 Dengue DNS1 (Non-Structural Protein 1) is a highly conserved glycoprotein secreted by all flaviviruses, including the dengue virus (DENV). During dengue infection, DNS1 is released into the patient’s bloodstream from the earliest stages of illness, often before antibodies or viral RNA reach detectable levels.