Factors that may increase your risk of developing influenza or its complications include:
Sept. 29, 2015
- Age. Seasonal influenza tends to target young children and older adults.
- Living conditions. People who live in facilities along with many other residents, such as nursing homes or military barracks, are more likely to develop influenza.
- Weakened immune system. Cancer treatments, anti-rejection drugs, corticosteroids and HIV/AIDS can weaken your immune system. This can make it easier for you to catch influenza and may also increase your risk of developing complications.
- Chronic illnesses. Chronic conditions, such as asthma, diabetes or heart problems, may increase your risk of influenza complications.
- Pregnancy. Pregnant women are more likely to develop influenza complications, particularly in the second and third trimesters.
- Obesity. People with a BMI of 40 or more have an increased risk of complications from flu.
- Longo DL, et al., eds. Influenza. In: Harrison's Principles of Internal Medicine. 19th ed. New York, N.Y.: The McGraw-Hill Companies; 2015. http://accessmedicine.com. Accessed June 10, 2015.
- What you should know for the 2014-2015 influenza season. Centers for Disease Control and Prevention. http://www.cdc.gov/flu/about/season/flu-season-2014-2015.htm. Accessed May 31, 2015.
- Dolin R. Clinical manifestations of seasonal influenza in adults. http://www.uptodate.com/home. Accessed June 10, 2015.
- Bennett JE, et al. Influenza (including avian and swine influenza). In: Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 8th ed. Philadelphia, Pa.: Saunders Elsevier; 2015. https://www.clinicalkey.com. Accessed May 27, 2015.
- The flu: What to do if you get sick. Centers for Disease Control and Prevention. http://www.cdc.gov/flu/takingcare.htm. Accessed May 31, 2015.