I'm Louise-most people call me Lou-and I live in Kansas. I feel pretty rotten now. I have a sore throat, a cough, and achy muscles. Doctor Petrie said I caught the flu-that's short for influenza. My friends Sue, Hugh, and Stu also caught it. I hear it's going around (and not just to people whose names rhyme!) My dad's giving me lots of stuff to drink and making sure I sleep a lot. I asked Doctor Petrie, "Where does the flu come from?" She said, "Many scientists think the flu comes from ducks in China." How can a virus travel around the world?