Calling All Guinea Pigs: Volunteer for the H1N1 Trials Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Scientists have developed a flu vaccine to combat the expected surge in H1N1 in October. ( Flickr user ringai (cc: by-nc-sa) ) Hosted by Farai Chideya and Lynn Sherr Produced by PRI and WNYC