Seasonal Influenza occurs in outbreaks every year from fall to early spring. The seasonal flu, as well as all forms of the flu, are contagious with symptoms ranging from mild to severe, and in some cases deadly. People of any age or health can contract the flu but some groups are more susceptible to the illness and other complications. These people include the elderly (over 65 years old), children two years and younger, and anyone with a history of chronic medical conditions like diabetes, asthma, or lung disease.
The severity, length, and duration of flu season vary from year to year. Some years the flu season does not reach its peak until January or February. Sometimes flu activity can extend as far into the year as May. This year the flu season is uncertain as to when it will peak, or how long it will last.