According to numbers just posted by the U.S. Centers for Disease Control and Prevention, new infections of the H1N1 virus continue to decrease across the U.S. That downturn made me wonder if we've seen the last of this pesky virus for this flu season. So I took my questions to our resident expert, Yvonne Maldonado, MD, a professor of pediatric infectious diseases. In my latest 1:2:1 podcast you'll hear Maldonado being both skeptical and optimistic. That's the way these flu viruses play themselves out. They're elusive, mysterious and always able to confound.