Polio immunization 1956
Past seasonal flu seasons have hit older Americans the hardest with about 30,000 deaths annually. Pandemic flu epidemics seem to affect the young and healthy, too.
Swine flu (H1N1) 2009 seems to be more dangerous for those born after 1950; and especially so for those 6 months to 24 years of age.
Centers for Disease Control and Prevention
I can't help but wonder why the limited supplies of vaccine haven't been distributed, free of charge, to local school districts nation wide, as it seems likely that school children are bringing the flu home to their parents and siblings.
Contact your state or local public health officials for current information on H1N1 immunization opportunities.
Find your state public health contact information