Dengue fever
Dengue fever, caused by the dengue virus, is a mosquito-borne illness with symptoms like fever, rash, nausea, and aches, appearing 3–14 days after infection and lasting up to a week. Severe cases can lead to complications such as internal bleeding, shock, or death, requiring hospital care. With over half the world's population at risk, dengue's global incidence has risen sharply, causing around 36,000 deaths annually.