March 29, 2017
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Influenza (cont.)

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What is the prognosis for patients who get the flu? What are possible complications of the flu?

In general, the majority (about 90%-95%) of people who get the disease feel terrible (see symptoms) but recover with no problems. People with suppressed immune systems historically have worse outcomes than uncompromised individuals; current data suggest that pregnant individuals, children under 2 years of age, young adults, and individuals with any immune compromise or debilitation are likely to have a worse prognosis. Complications from the flu may worsen medical conditions such as asthma, congestive heart failure, and diabetes. Other complications may include ear infections, sinus infections, dehydration, pneumonia, and even death. In most outbreaks, epidemics, and pandemics, the mortality rates are highest in the older population (usually above 50 years old). Complications of any flu virus infection, although relatively rare, may resemble severe viral pneumonia or the SARS (severe acute respiratory syndrome caused by a coronavirus strain) outbreak in 2002-2003, in which the disease spread to about 10 countries with over 7,000 cases, over 700 deaths, and had a 10% mortality rate.

Can the flu be deadly?

Yes. However, associated deaths per year depend upon the virulence of the particular strain of virus that is circulating. That means for any given year, the likelihood of dying from the flu varies according to the specific infecting viruses. For example, from 1976-2007 (the most reliable available data according to the CDC), deaths associated with the flu range from a low of about 3,000 per year to a high of about 49,000 per year. The CDC estimates about 36,000 deaths/year in the U.S. in recent years. The 1918 flu pandemic (1918-1919) was estimated to cause 20-50 million deaths worldwide.

Medically Reviewed by a Doctor on 11/15/2016

Source: MedicineNet.com
http://www.medicinenet.com/influenza/article.htm

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