On May 30, 2024, the World Health Organization (WHO) reported that as of 30 April 2024, over 7.6 million dengue cases had been reported to WHO, including 3.4 million confirmed cases, over 16 000 severe cases, and over 3000 deaths.

While a substantial increase in dengue cases has been reported globally in the last five years, this increase was particularly pronounced in the Region of the Americas, where the number of cases had already exceeded seven million by the end of April 2024, surpassing the annual high of 4.6 million cases in 2023.

Dengue virus is transmitted to humans through the bite of infected mosquitoes. Cases are most commonly asymptomatic or result in mild febrile illness. However, some cases will develop severe dengue, which may involve shock, severe bleeding or severe organ impairment.