Two tests said nine-year-old Hayli Murphy didn't have H1N1 flu. When both tests were wrong, Hayli suffered the consequences. Here's what parents need to know when it comes protecting their children from H1N1.
What's the one thing you wish you'd known before you had to fight a catastrophic illness? What's the greatest lesson your illness taught you? Share your photos, videos and stories, and see more from the Empowered Patient series on CNN.com. FULL STORY
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