How many shots of the H1N1 vaccine does a child under 4 need?

The injected vaccinations approved for use in the US for H1N1/09 can be given to babies as young as 6 months. Vaccinations are not given to younger babies because their immune systems are not mature enough to deal with the immune response needed for vaccinations to work. It is important that all those in contact with infants under 6 months get their vaccinations so they do not bring home the flu to babies at high risk due to their immature immune systems.

The nasal mist vaccines can be given to children 2 and older.

Check with your pediatrician for the best information on the appropriateness of the vaccinations for your children.