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Flu season in the Southern Hemisphere is almost over—and now it’s heading back our way. At the time this issue went to press, there were more than 162,000 confirmed cases and 1,154 deaths worldwide from “novel H1N1,” a.k.a. swine flu, but the Centers for Disease Control and Prevention believes this figure is a gross underestimate, especially since only a fraction of people who have the flu go to the hospital.