Dengue fever is an acute vector-borne disease caused by the transmission of dengue virus by mosquito vectors. Dengue virus infection can lead to latent infection, dengue fever, dengue hemorrhagic fever, and dengue hemorrhagic fever is rare in China. The typical clinical manifestations of dengue fever are rapid onset, high fever, headache, severe pain in muscles and joints, rash in some patients, bleeding tendency, swollen lymph nodes, decreased white blood cell count, and thrombocytopenia.
Since the disease is transmitted by Aedes mosquitoes, it has a certain seasonality, generally in the period from May to November of each year, and the peak is from July to September. In the new epidemic areas, the population is generally susceptible, but the incidence is mainly adult, and in endemic areas, the incidence is mainly children.