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CDC warns of increased risk of dengue fever

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Symptoms usually begin four to ten days after being bitten by an infected mosquito, health officials say.

The U.S. Centers for Disease Control and Prevention sent warnings to health officials and health care providers about relatively high levels of dengue fever cases on Tuesday.
“Dengue activity remains high in the US and some parts of the world, with many countries reporting more dengue cases in 2024 and 2025,” the CDC warned in a breaking news report.

The agency urged healthcare providers, state and local health agencies, and the public to take steps to detect and prevent dengue fever.

Transmissions remain high in North and South America, including Puerto Rico and the US Virgin Islands, including Puerto Rico and the territories of the US, according to the CDC.

“Spring and summer travel coincides with the peak season of dengue fever in many countries, increasing the risk of both travel-related cases and locally acquired cases,” the CDC said with caution.

The federal health agency pointed out data updated as of March 10th. This has been reported in the Caribbean with more than 13 million dengue fever reported in North, Central and South America. It noted that localized transmission of the virus was reported in Florida, California and Texas last year.

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It is also known as “divided fever.” Dengue fever is transmitted by mosquito-like mosquitoes, as it can be very painful. Four different but related viruses cause the disease: Dengue viruses 1, 2, 3 and 4, according to health officials.

The World Health Organization says that about half of the world’s population is at risk of getting sick, with 100 million to 400 million infectious diseases each year. Symptoms include fever, severe headaches, and muscle and joint pain. There are no widely available medications to treat dengue infections.

Last year, the CDC sent a similar health warning about an increased risk of dengue infections across the United States.

“The global incidence of dengue in 2024 is the highest on record for this calendar year. Many countries report higher than usual dengue cases,” the CDC said in its June 2024 recommendation.

Some people are unable to experience any signs or symptoms of dengue infection. However, if symptoms develop, they can be mistaken for another disease, such as the flu. According to Mayo Clinic, symptoms usually begin 4 to 10 days after being bitten by a mosquito infected with dengue. The virus generally causes a fever of 104 degrees Fahrenheit and can include several other symptoms.

These include muscles, bones, or joint pain. Vomiting; nausea; pain behind the eyes; swollen glands; and rash. In some cases, symptoms can be life-threatening, known as “severe dengue fever,” dengue hemorrhagic fever, or dengue shock syndrome, the clinic says on its website.

Serious symptoms can often occur after the fever has subsided and can include persistent vomiting, abdominal pain, fatigue, rapid breathing, bleeding gums or nose, blood in the blood, restlessness, thirst, pale skin, cold skin, and weakness.

According to Johns Hopkins Medical School, complications from the severe form of the disease can cause organ damage, severe bleeding and respiratory problems.

The Associated Press contributed to this report.



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