7. Inadequate treatment could worsen your condition. Being struck with the flu is bad enough, but be aware that it could potentially morph into either viral pneumonia or bacterial pneumonia. "The thing that can be really dangerous is when people have that viral pneumonia and then they get that bacterial pneumonia on top of it," Lynch says. As the CDC notes, such complications can be life-threatening.
If you're unfortunate enough to attract the flu in the weeks ahead, you'll face a choice: Eight hours in the office or in your bed? Hopefully your better judgement will kick in.