House speaker stands her ground on gov't-run health plan, even as Obama advisers signal it's not mandatory• Study: H1N1 Vaccine Too Late, Won't Help Most | VIDEO• YOU DECIDE: Do You Think You'll Catch H1N1?• H1N1 Flu Outbreak in July Shows Pattern of Virus Hospitals Restricting Visitors to Stop H1N1 Spread H1N1 in Minn.