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Risk factors
By Mayo Clinic staffFactors that put you at greater risk of developing dengue fever or a more severe form of the disease include:
- Living or traveling in tropical areas. Being in tropical and subtropical areas around the world — especially in high-risk areas, such as tropical Asia, Central and South America, and the Caribbean — increases your risk of exposure to the virus that causes dengue fever. Dengue virus transmission occurs year-round, although the risk is highest during a recognized dengue fever outbreak.
- Prior infection with a dengue fever virus. Previous infection with a dengue fever virus increases your risk of a more severe form of the disease. This is especially true for children. If you've had dengue fever before, you can get it again if you become infected with another one of the four dengue-causing viruses. Having antibodies to a virus in your blood from a previous infection usually helps protect you. But in the case of dengue fever, it actually increases your risk of severe disease — dengue hemorrhagic fever — if you're infected again.
References
- Dengue fever overview. National Institute of Allergy and Infectious Diseases. http://www3.niaid.nih.gov/topics/DengueFever/Understanding/overview.htm. Accessed Aug. 12, 2009.
- Rothman AL. Epidemiology of dengue virus infections. http://www.uptodate.com/home/index.html. Accessed Aug. 12, 2009.
- Centers for Disease Control and Prevention, et al. Dengue hemorrhagic fever - U.S.-Mexico border, 2005. MMWR. 2007;56:31. http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5631a1.htm. Accessed Aug. 12, 2009.
- Rothman AL. Clinical presentation and diagnosis of dengue virus infections. http://www.uptodate.com/home/index.html. Accessed Aug. 12, 2009.
- Rothman AL. Prevention and treatment of dengue virus infection. http://www.uptodate.com/home/index.html. Accessed Aug. 12, 2009.
- Dengue and dengue haemorrhagic fever. World Health Organization. http://www.who.int/mediacentre/factsheets/fs117/en/print.html. Accessed Aug. 12, 2009.
- Zielinski-Gutierrez E, et al. Protection against mosquitoes, ticks, and other insects and arthropods. In: Brunette GW, et al. CDC Health Information for International Travel 2010. Atlanta, Ga.: U.S. Department of Health and Human Services, Public Health Service; 2009. http://wwwn.cdc.gov/travel/yellowbook/2010/chapter-2/protection-against-mosquitoes-ticks-insects-arthropods.aspx. Accessed Aug. 17, 2009.
- West Nile virus questions and answers: Insect repellent use and safety. Centers for Disease Control and Prevention. http://www.cdc.gov/ncidod/dvbid/westnile/qa/insect_repellent.htm. Accessed Aug. 17, 2009.
- Tsai T, et al. Flaviviruses (yellow fever, dengue, dengue hemorrhagic fever, Japanese encephalitis, West Nile encephalitis, St. Louis encephalitis, tick-borne encephalitis). In: Mandell GL, et al. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 6th ed. Philadelphia, Pa.: Elsevier Churchill Livingstone; 2005. http://www.mdconsult.com/das/book/body/154687162-3/0/1259/1219.html?tocnode=51380756&fromURL=1219.html#4-u1.0-B0-443-06643-4..50152-5_5152. Accessed Aug. 17, 2009.
