ELISA (enzyme linked immunosorbent assay) is used for detection of Dengue NS1 antigen. ... However, in secondary dengue it appears earlier as compared to primary infection.

NS1 antigen occurs before the symptoms show up. As you get a fever, this antigen rises. ... These antibody levels play a crucial role in diagnosing secondary infection of dengue.

The major diagnostic markers for dengue infection include detection of the dengue virus, viral RNA, and viral antigens such as the NS1 protein when the patient has viremia (high levels of the ...

This is possible because the vaccine has a yellow fever NS1 in place of dengue NS1. Samples were either considered seropositive or seronegative by viral plaque reduction test (done at baseline) or by ...

NS1 Antigen can be detected in both primary and secondary dengue infections. However, NS1 is challenging to detect once anti-NS1 antibodies appear.

Biosensorix pens pact to develop rapid dengue, stroke tests By Nick Paul Taylor Feb 26, 2018 10:00am Dengue fever point-of-care diagnostics stroke Israel ...

More information: Huaqi Tang et al, Revealing Mechanopathology Induced by Dengue NS1 Using Organ Chips and Single-Cell Force Spectroscopy, ACS Biomaterials Science & Engineering (2025). DOI: 10. ...

Here are the common tests recommended to diagnose dengue: 1. Dengue NS1 Antigen This is a blood test to detect the dengue virus early in the course of an infection. When to get the test done: It ...