The H1N1 flu is a new type of flu virus, so no one has any immunity. Even if you got a seasonal flu shot this year, it will provide no protection against the H1N1 flu. And healthy individuals appear to be as much at risk, or more, of contracting the flu as anyone else (in comparison to the seasonal flu). There is no vaccine at the present time and development of a vaccine will take at least 6 months. We do not yet know how serious the H1N1 infection will be. Some cases have been mild; some have been more severe. It is possible that the virus will change (mutate) over time and become more deadly. It is too soon to tell how much this virus will spread, how fast it will spread, or how mild or severe cases of the flu will be. A pandemic can take months or years to run its course.