What to know about dengue as CDC warns of rising risk in US [Video]

Dengue virus is the most common mosquito-spread virus globally, but generally relatively rare in the continental United States. However, the U.S. Centers for Disease Control and Prevention warned this week about a higher-than-expected number of dengue cases among U.S. travelers — 745 cases through June 24 — as well as a public health emergency in Puerto Rico, where the virus is endemic.Global infections in 2024 have been the highest on record, with cases in the Americas already reaching 9.7 million — exceeding the highest number ever recorded in a single year.What is dengue, and where is it common?Dengue is a mosquito-borne virus that is spread mainly via the Aedes aegypti mosquito, which is also known to carry several other viruses such as yellow fever, chikungunya and Zika, according to the CDC.Dengue is endemic in more than 100 countries in tropical and subtropical climates, mostly in urban and semi-urban areas, according …