According to surveys, around 400 million people are infected with dengue fever each year which mostly takes place in tropical regions. The most common symptoms of dengue fever include: Fever Nausea Vomiting Bone pain Joint pain Eye irritation rashes A Dengue NS1 Antigen Test confirms whether you are infected with dengue fever or not. The test was introduced back in the year 2006, and from then onwards it has been an effective test to detect dengue. Dengue is spread through the bite of mosquitoes and one must make sure that they connect with a trusted lab for top-notch dengue tests.