CDC Warns of Increased Dengue Fever Risk in U.S., Americas

The CDC has issued a health alert regarding an elevated risk of dengue fever, highlighting a significant rise in cases among U.S. travelers and local transmission in several states, including California, Florida, and Texas. In 2024, a record 3,484 travel-associated dengue cases were reported, marking an 84% increase from the previous year, and the overall dengue activity remains high in the Americas, especially in Puerto Rico and the U.S. Virgin Islands, where outbreaks are ongoing. Puerto Rico has seen a 113% increase in cases, with over 6,291 reported in 2024, leading to a public health emergency declaration. The CDC warns that spring and summer travel increases the risk of both travel-associated and locally acquired cases, as the virus is more easily spread during warmer months. All four dengue serotypes have been found in U.S. travelers, with serotype 4 becoming more prevalent. Healthcare providers have been urged to follow updated testing recommendations to manage and detect cases effectively.