CDC (@CDCgov) posted a photo on Twitter

Retweeted CDC (@CDCgov): What inspires your inner #PHNerd? RT your passion for public health & this graphic. http://t.co/4GNql3Lixs

via VAT ENGPlus Combo | VATPlus | MotionTrak http://twitter.com/CDCgov/status/373112228603375616/photo/1/large?utm_source=fb&utm_medium=fb&utm_campaign=Fix_Imbalance&utm_content=373118082690326529