“…However, the existing literature consistently supported the assertion that providers often communicated about HPV vaccine differently from other vaccines in discrete ways. Quantitative and qualitative studies found that providers spent longer talking about HPV vaccine than other vaccines, 11,27,35,74,76,84 endorsed HPV vaccine less strongly than Tdap and meningococcal vaccines, 11,12,22,74,87 and often presented HPV vaccine as an "optional" vaccine vs. one that was "routine" or "required." 12,22,38,74,79,91 Finally, one study found that, among providers with a preferred order for discussing adolescent vaccines, over two-third preferred to discuss HPV vaccine last.…”