H1N1 flu is back and found in 37 states, CDC reports

Nasal spray vaccine for swine flu now shipping to some clinics; studies suggest it’s OK to get shots for seasonal flu and swine flu at same time

H1N1 influenza, or swine flu, has now returned full bore to the United States after largely dissipating over the summer, a Centers for Disease Control and Prevention official said during a news briefing October 9.