The Pandemic Infl uenza Plan of the US Department of Health and Human Services (HHS) (37) does not adequately address potential social disparities in exposure, vaccination, or treatment; the possible effects of such disparities; or strategies for minimizing or eliminating them. The HHS plan (37) , the federal guidance on vaccine allocation (38) , and the recent Centers for Disease Control and Prevention (CDC) guidelines for community-level mitigation strategies (18) should be credited for calling for community engagement and inclusion of a wide variety of stakeholders in planning at the local level. Outreach to providers, community leaders, and organizations, particularly in disadvantaged communities, will be an important component of any strategy for addressing disparities during a pandemic. However, the available versions of offi cial plans do not call attention to the need for special efforts to overcome the greater barriers likely to be faced by socially disadvantaged groups.