Change in Hepatitis A Seroprevalence among U.S. Children and Adolescents: Results from the National Health and Nutrition Examination Survey 2003-2006 and 2007-2010.

Vaccines (Basel) · 2013 · PMC4515580 · PMID 26343961

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did not reach statistical significanceno p-value reported

A similar effect was found in the region with early recommendations (18.5 percentage points) but it did not reach statistical significance.

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