CDC (@CDCgov) posted a photo on Twitter

Retweeted CDC (@CDCgov): Passionate about public health? RT to let your inner #PHNerd out! http://t.co/RctrOCsT0X

via VAT ENGPlus Combo | VATPlus | MotionTrak http://twitter.com/CDCgov/status/368100726913777664/photo/1/large?utm_source=fb&utm_medium=fb&utm_campaign=Fix_Imbalance&utm_content=368104402407931904