Results Among 4,326 non–critically ill patients approached in the 10 participating EDs, 3,285 (75.9%) agreed to participate. Among these, 54.6% were female; 29.6% were Black, 27.0% were non-Hispanic White, and 31.5% were Hispanic; 7.8% had marginal or unstable housing; 21.0% lacked primary health care; and for 17.9%, Spanish was the primary language (Table 1). Approximately one half (49.4%; 95% CI = 47.7%–54.1%) of participants had not heard of one or more recommended vaccines (Table 2).