Dengue rash (File Photo – United States Military)
The Los Angeles County Health Department is investigating cases of locally acquired dengue in residents of the City of Baldwin Park.
By News Desk
The residents have no history of travel to areas where dengue is endemic prior to their symptoms. This brings the total number of cases of locally acquired dengue in L.A. County in 2024 to three, which is an unprecedented number of locally transmitted cases for a region where dengue has not previously been transmitted by mosquitoes. Public Health initially reported a confirmed case of locally acquired dengue on September 9, 2024. Cases of locally acquired dengue were previously confirmed by Long Beach and Pasadena in fall 2023.
Dengue and prevention
Dengue is primarily transmitted through the bite of an infected Aedes mosquito. Although Aedes mosquitoes are common in LA County, cases of locally acquired dengue are extremely rare. Almost all previously reported dengue cases in LA County have been associated with travel to a country where dengue is commonly spread.
These additional cases of local virus transmission are a stark reminder for all Los Angeles County residents that simple steps to prevent mosquito breeding and mosquito bites can lower the risk of mosquito-borne diseases and prevent more sustained transmission in the future.
Dengue fever can cause flu-like symptoms including high fever, severe headache, pain behind the eyes, joint and muscle pain, rash, and mild bleeding. Severe cases can result in shock, severe bleeding and severe organ impairment which require immediate medical attention.
Symptoms of dengue may mimic other viruses so healthcare providers should be vigilant for dengue fever in patients with acute febrile illness and test for and report suspect cases of mosquito-borne diseases. Providers should also routinely discuss mosquito bite prevention with patients and travelers.
“Reducing exposure to mosquitoes and the risk for mosquito bites are crucial to preventing transmission of mosquito-borne disease, including dengue fever,” said Muntu Davis, MD, MPH, Los Angeles County Health Officer. “This can be as simple as using insect repellent to prevent mosquito bites, eliminating any standing water around your home where mosquitoes can breed, and keeping your home mosquito-free by using or fixing screens on your doors and windows. These straightforward measures can significantly reduce the risk of mosquito-borne disease for both you and your neighbors.”
Tip, Toss, and Protect
The San Gabriel Valley Mosquito and Vector Control District reminds residents that mosquitoes breed in standing water and urge everyone to follow these simple steps:
- Tip out standing water at least every week. Even a small amount, like in a bottle cap, can become a breeding ground for mosquitoes.
- Toss any unused containers that can collect water.
- Protect yourself from mosquito bites by using repellents containing EPA-approved active ingredients, such as DEET, Picaridin, IR3535, or oil of lemon eucalyptus.
For questions or to find a nearby clinic or doctor, call the InfoLine: (833) 540-0473 every day from 8:00 am to 8:00 pm.
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