Recent figures released by the Centers for Disease Control and Prevention indicate that dengue fever cases have risen in a minimum of 15 U.S. states following the sizable outbreak in Florida. Florida contributed the largest share of the increase, adding 93 new cases to its tally.
Florida outbreak continues to expand
The surge comes as Florida grapples with what officials describe as the most significant dengue outbreak in the continental United States in decades. Hundreds of infections have been recorded this year, many of them locally acquired, meaning the virus was contracted within the state rather than during travel abroad. The concentration of cases has been greatest in the Tampa Bay area, prompting emergency declarations in several counties.
Nationwide rise and state‑by‑state details
CDC data show a total increase of 130 dengue cases across the reporting period for the states that reported growth. Florida’s count climbed from 392 to 485, while California saw its numbers rise from 31 to 45, the second‑largest jump. Smaller increases were observed in a range of other states: New York (27 to 31), Texas (14 to 17), New Jersey (16 to 19), Illinois (10 to 13), Washington (16 to 18), Maryland (11 to 12), Connecticut (6 to 7), Massachusetts (10 to 11), Kentucky (4 to 5), Indiana (2 to 3), Nebraska (2 to 3), Colorado (10 to 11) and West Virginia, which recorded its first case, moving from zero to one.
These numbers reflect a broader pattern of rising dengue activity linked to international travel and the presence of Aedes mosquitoes, which are capable of transmitting the virus. When travelers return to the United States while infected, local mosquito populations can occasionally spread the disease to others, leading to the observed upticks.
Public health guidance and next steps
Health officials continue to urge residents to limit exposure to mosquito bites. Recommendations include applying EPA‑registered insect repellents, wearing long‑sleeved clothing, and eliminating standing water where mosquitoes breed. The CDC’s latest update suggests that dengue activity remains elevated in Florida and is climbing in several other jurisdictions.
While most U.S. cases have historically been associated with travel, the Florida situation demonstrates how quickly local transmission can emerge when the virus encounters suitable mosquito vectors. The agency has been contacted for comment, and a response is pending.
Dengue is a viral illness spread by mosquito bites, with symptoms ranging from fever, headache, and rash to severe manifestations such as shock, bleeding, and organ failure in a minority of patients. Most infections are mild or asymptomatic, but the potential for severe disease underscores the importance of preventive measures.
Mitchell Landsberg is a Senior Technology Correspondent at News Raise. He covers consumer electronics, artificial intelligence, software developments, and digital privacy trends.
