The Centers for Disease Control and Prevention this week issued a health advisory notifying the public of an increased risk of dengue virus infections in the U.S. this year.
The alert comes as many countries are reporting higher-than-usual cases of dengue virus, which is transmitted through bites from infected mosquitos. Countries in the Americas have reported a record-breaking 9.7 million dengue cases between Jan. 1 and June 24, more than doubling the 4.6 million dengue cases reported for all of 2023, according to CDC.
A total of 2,241 dengue cases were reported in the U.S. between Jan. 1 and June 24, compared to 3,306 cases reported for all of 2023. Of those 2,241 dengue cases reported in the U.S. this year, the majority (1,498) were in Puerto Rico, a U.S. territory, and about half of those cases (745) were identified among U.S. travelers. Puerto Rico declared a public health emergency in March.
There are currently no antiviral medications approved to treat dengue. About one in four dengue cases are symptomatic and can be mild or severe. Symptoms usually begin after about five to seven days and present as a fever accompanied by possible nausea, vomiting, rash, muscle aches, joint pain, bone pain, pain behind the eyes, headache or low white blood cell counts. Additional warning signs include abdominal pain or tenderness, persistent vomiting, lethargy or restlessness, and more. About 4,000 deaths were attributed to the 4.6 million dengue cases reported in the Americas in 2023.
Given the uptick in both global and domestic dengue cases, the CDC suggests the following tips for the public:
– Prevent mosquito bites by used Environmental Protection Agency-approved repellents during travel to and after returning from areas with frequent dengue transmission. Also, wear loose-fitting, long-sleeved pants and shirts;
– When at home, control mosquitos by using air conditioning and window screens to lower risk for bite indoors, and be sure to dump and drain outdoor containers that hold water to reduce egg-laying sites for mosquitos;
– Seek medical care if you have a fever or dengue symptoms.
The CDC also recommended the following tips for healthcare providers:
– Have increased suspicion of dengue among people with fever who have been in areas with frequent dengue transmission within 14 days before illness onset;
– Order appropriate diagnostic tests for acute DENV infection;
– Ensure timely reporting of dengue cases to public health authorities;
– Promote mosquito bite prevention measures among people living in or visiting areas with frequent dengue transmission.
More tips from CDC on how to prevent dengue can be found online.
Dr. Debi Johnson is a medical expert and health journalist dedicated to promoting well-being. With a background in medicine, she offers evidence-based insights into health trends and wellness practices. Beyond her reporting, Dr. Debi enjoys hiking, yoga, and empowering others to lead healthier lives.
