The Dengue Virus The disease known as dengue fever is transmitted through the bite of a mosquito carrying one of the dengue viruses. Normal dengue symptoms are flu-like, but they can deteriorate into severe dengue (dengue hemorrhagic fever), a condition that can be fatal. A second infection raises your likelihood of developing serious symptoms. Even if you have already had … [Read more...] about Don’t Ignore Unusual Symptoms of Dengue Virus