摘要
登革热是经蚊子传播的病毒性感染。它比其他虫媒感染引起更多的疾病和死亡，WHO把对它的控制放在优先级考虑。登革热病毒是与黄热病毒和乙型脑炎病毒关系密切的黄病毒。有4种血清型（1、2、3和4）。感染了1种血清型不会诱发对其他血清型相同的免疫性，个体可能感染不止一次的登革热。
Dengue is a viral infection transmitted by mosquitoes. It causes more illness and death than any other arboviral infection, and its control is a priority for the WHO. Dengue viruses are flaviviruses closely related to yellow fever virus and Japanese encephalitis virus. There are four serotypes（1, 2, 3 and 4） . Infection with one serotype does not induce solid immunity to the others, and individuals may be infected with dengue more than once.
