(CNN) — The federal government has a powerful new weapon in the fight against the H1N1 flu virus: Elmo. The popular Sesame Street character will be featured in a series of public service advertisements meant to encourage better hygiene among young children, the Department of Health and Human Services announced Tuesday. In the ads, Elmo teams up with Gordon, another Sesame Street veteran, to stress the importance of basic healthy habits such as frequent hand washing, sneezing into the bend of Continue reading ...