Monday, November 9, 2009

Questions about second dose of H1N1 flu vaccine for children under 10

Q. My child is under 10 and has received his first dose of H1N1 vaccine. Will there be enough vaccine to get the second dose 28 days later? The first dose was a nasal spray, what if nasal spray is unavailable later?

A. US CDC recommends that the two doses of H1N1 vaccine for children 9 years of age and younger be separated by 4 weeks. There is no maximum number of days between doses.

Ideally the same type of vaccine – nasal spray or injection – should be used for both doses. If different types of vaccine are used for the first and second doses, however, there is no need to revaccinate a child.

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