The Los Angeles County Department of Public Health is currently investigating a fifth case of locally acquired dengue fever, as reported by a county bulletin. The case, occurring in El Monte, is peculiar as the individual had not traveled to any dengue-endemic region, suggesting local transmission of the virus, which is uncommon in LA County. This incident, separate from the four previous cases this year, underscores a growing concern over the emergence of dengue in the area.
"This case further indicates that dengue can spread in our community. Preventing mosquito bites and mosquito breeding is the best way stop local transmission of dengue," said Muntu Davis, MD, MPH, Los Angeles County Health Officer. With hot weather favoring the proliferation of mosquitoes, the risk of dengue and other mosquito-borne diseases climbs. A list of precautionary measures includes using insect repellent, eliminating standing water, and securing homes against entry by mosquitoes.
Symptoms of dengue are flu-like and may include high fever, headache, pain behind the eyes, joint and muscle pain, rash, and mild bleeding. In severe cases, the disease can cause shock and significant organ impairment, necessitating immediate medical care. Dengue diagnosis is confirmed through blood tests, and those experiencing symptoms are advised to see a healthcare provider promptly.
Healthcare providers are urged by Public Health to keep dengue in mind when treating patients with acute febrile illnesses, and to profile, test, and report suspected cases. Providers are also expected to routinely educate patients on ways to prevent mosquito bites. Enhanced community surveillance and public education efforts are being carried out in partnership with the San Gabriel Valley Vector Control District, focusing on mosquito trapping and targeted abatement strategies to curb the spread of the virus.de
"We are intensifying our efforts with targeted backpack and truck-mounted treatments, increased surveillance, and ongoing inspections to reduce adult mosquitoes in the community," Jason Farned, SGVMVCD District Manager, told Los Angeles County Public Health. Public participation in these containment strategies, like eliminating standing water and using EPA-approved repellents, is deemed critical in the effort to combat the local transmission of dengue. Additional tips for prevention are detailed in the county's bulletin on the matter.
The initial case of locally acquired dengue was confirmed on September 9, 2024, with a small number of cases following. Typically, such occurrences have been among persons who have visited regions where the disease is more common, like the Caribbean, Central and South America, and parts of Asia. While most infected individuals recover, severe cases can be life-threatening, underscoring the importance of public awareness and proactive measures against dengue.