Last updated 10/25/2024.
See below, or click the following links to learn more about:
October 25, 2024
A second case of locally acquired dengue in San Diego County has been confirmed in a Vista resident who became sick and was hospitalized. The case did not recently travel to an area where the mosquito transmitted illness is common. This second case is not associated with the first locally acquired case.
To protect the public’s health and keep mosquitoes from potentially spreading the dengue virus, County Vector Control is in Vista starting today through October 29, 2024 treating the area around about 60 homes. For people in the affected area, County public health staff will be on site in Vista on October 26 and October 28 to answer questions and provide information about dengue.
October 6, 2024
The first ever locally acquired dengue case in San Diego County has been identified in an Escondido resident.
- Neither the case nor their household members had a history of domestic or international travel.
- While the case was initially hospitalized, they have since been discharged and is recovering.
- No additional suspect cases have been identified at this time.
- This is the sixth case of locally acquired dengue in California this year.
To protect the public’s health and keep mosquitoes from potentially spreading the dengue virus, County Vector Control began spraying on Friday 10/4/2024 for mosquitos at about 170 homes in Escondido. Treatments started on Friday and will continue through the following week.
Dengue is a tropical viral disease that is not commonly found in the United States. Since the invasive Aedes mosquitoes were first detected in San Diego County in 2014, there had been no locally acquired cases of dengue until now.
People who travel to countries where dengue is common can get infected with dengue through mosquito bites. So far this year, there have been 49 cases of travel-related dengue in San Diego County.
California Health Alert Network (CAHAN) San Diego
- Health Advisory: Second Locally Acquired Case of Dengue in San Diego County (October 25, 2024)
- Health Advisory: First Locally Acquired Case of Dengue in San Diego County (October 6, 2024)
- Health Advisory: Increased Risk of Dengue Infections in the U.S. (June 28, 2024)
County News Center
- County Reports Second Locally Acquired Dengue Case (October 25, 2024)
- County Reports First Locally Acquired Dengue Case (October 6, 2024)
- County to Hand Spray for Mosquitoes in Oceanside Area (September 9, 2024)
- County to Hand Spray for Mosquitoes in Mt. Hope Area (July 24, 2024)
County of San Diego
For more information, send an e-mail to the Epidemiology Unit.
Popular Services