Flu season is coming early in parts of the United States: At this time last year, flu cases were lower in DC than they are now, according to data on Google's Flu Trends.

Overall in DC, activity is considered high and heading quickly toward an "intense" ratings. It was considered moderate at this time in 2011, according to Flu Trends.

Flu activity is strongest in the South and southeastern United States, according to a recent release from the Centers for Disease Control and Prevention. 

The CDC also offers this information and tips about avoiding influenza this winter:

• Who should get vaccinated
• When to get vaccinated
• Selecting a flu vaccine
• Symptoms, complications and severity
• Treatment if you get the flu
• How flu spreads

See also: Flu Season off to an Early, Strong Start