1. Views on vaccines and more--mid-COVID: a look at gender differences : 2021 AARP views on vaccines survey of adults ages 50 and older Publication: [Washington, DC] : AARP, March 2021 Subject(s): Attitude to HealthCOVID-19 VaccinesSex FactorsVaccination HesitancyAgedHealth Care SurveysMasksMiddle AgedUnited States