Nationwide H1N1 Vaccination Campaign Begins in United States

Doctors, nurses and other health-care workers in Indiana and Tennessee will receive the first doses of swine flu vaccine Monday as the federal government launches the most ambitious vaccination campaign in U.S. history.

Vaccination clinics are scheduled for Monday morning for staff at Le Bonheur Children's Medical Center in Memphis, Tennessee and Wishard Health Services in Indianapolis, the CDC said.

Last week, the center said the first doses of H1N1 swine flu vaccine would arrive on Tuesday. The first vaccines to administered will be AstraZeneca unit MedImmune's nasal spray.