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A
.gov website belongs to an official
government organization in the United States.
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A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Sensitivity analysis. Abbreviations: ER, emergency room; HIAP, high influenza activity period; IIV4c, cell-derived quadrivalent influenza vaccine; IIV4e, standard egg-derived quadrivalent influenza vaccine; rVE, relative vaccine effectiveness.
