An unwanted guest is waiting to crash your Super Bowl party but there are ways to keep the flu sidelined.
The Centers for Disease Control said the virus is widespread across 41 states.
Since October, more than 4,000 people have been hospitalized with flu complications.
The American Red Cross has seven tips to avoid flu party fouls. They include marking cups to keep someone from drinking after you, doing an elbow bump instead of high five and staying at home if you feel sick.