Dengue is a disease that is caused by dengue viruses and spread to people by mosquito bites. The mosquitoes that spread dengue are called Aedes aegypti and Aedes albopictus. About half of the world's population lives in areas where dengue is a risk. Dengue outbreaks are happening in many countries around the world. In the United States, local spread of dengue has been reported in California, Florida, Hawaii, Texas, and Arizona and as of October 2023, Long Beach. 

Press Release:
Long Beach Health Department Confirms Case of Locally Acquired Dengue 11.1.2023

Mosquito Treatment Notice:
he Health Department is partnering with the Greater Los Angeles Vector Control District to conduct mosquito control treatment on 11.9.23


Long Beach Cases By Year
Year Travel Associated Dengue Cases Locally-Acquired Dengue Cases
2011 1 0
2012 1 0
2013 3 0
2014 3 0
2015 5 0
2016 0 0
2017 1 0
2018 3 0
2019 2 0
2020 3 0
2021 0 0
2022 0 0
2023 5 1
* As of November 1, 2023



If you have any questions about Dengue, please call our Public Health Information hotline:
Telephone with solid fill  (562) 570-7907

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Frequently Asked Questions

  • What are the Signs and Symptoms of Dengue?

    Most people with dengue do not experience any symptoms, but those who do may experience mild or severe disease, usually lasting two to seven days. The most common symptom of mild dengue is fever, which can begin four to 10 days after the bite from an infected mosquito. 

    Other symptoms include:

    • Rash 
    • Severe headache 
    • Pain behind eyes 
    • Muscle and joint pain 
    • Bruising 
  • What is Severe Dengue?

    About one in 20 people may develop severe dengue, which is a medical emergency and if not treated can result in death. Severe dengue symptoms normally occur 24-48 hours after the fever subsides and include: 

    • Severe pain in the abdomen or stomach  
    • Bleeding from the nose or mouth  
    • Vomiting (at least three times within 24 hours)  
    • Vomiting blood or pooping blood 
  • How Do People Get Dengue?

    People can be infected with dengue through the bites of Aedes species mosquitoes carrying the virus. Mosquitoes become infected by biting a person with dengue virus in their blood. After about a week, the mosquito can spread the virus to other people when it bites. Dengue cannot spread directly from person to person. 

    Less commonly, a pregnant woman can spread the dengue virus to her child during pregnancy or around the time of birth and rarely, the virus can be spread in a healthcare setting through blood transfusion, organ transplant, or by accidental needle stick injuries. 

  • How is Dengue Treated?

    Currently, there is no specific medicine to treat dengue.

    The key to managing dengue is by working closely with your doctor to address the symptoms and receive appropriate care. Your doctor may recommend medications to help alleviate the symptoms, and getting plenty of rest and staying well-hydrated can also be beneficial. In cases of severe dengue, hospitalization and medical treatment may become necessary.

    If you experience severe dengue symptoms, it's crucial to seek immediate medical attention. 
  • How Can I Protect Myself and Others from Dengue?

    • Remove standing water around your home
    • Cover your arms and legs when outdoors
    • Use an EPA-registered insect repellent
    • Cover windows and doors with screens