CDC research reports that, on average, 8% of the U.S. population comes down with the flu each year. Children between 0 to 17 years old are most likely to get influenza (9.3% of the age group). Adults 18 to 64 years old follow closely at 8.8%; those 65 years and older at 3.9%, are somewhat less likely to get the flu. Those most at risk for complications from flu include adults 65 years and older, children younger than 5 years old, those suffering from specific chronic conditions, and pregnant women.

Most people are familiar with flu symptoms: cough, runny nose, muscle and body aches, fatigue, sore throat, and fever. But many are unaware of potential complications, which can include pneumonia, myocarditis, encephalitis, organ failure, muscle inflammation, ear and sinus infections, and worsening of chronic medical conditions (such as heart failure, asthma, or diabetes), which can be life-threatening. According to the CDC, a mild case of flu may need only rest, clear liquid hydration, and seclusion from others (except to get needed medical care) to prevent virus spread, but those who are very ill or in a highrisk category should contact their healthcare provider immediately. Treatment may include antiviral drugs and possible hospitalization to help control and manage symptoms.