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Enrollment, randomization, and vaccine status. A total of 134 participants were consented, among whom 124 were subsequently randomized and vaccinated. Among the 64 participants randomized to receive SD-QIV, 59 (92%) received both doses; among the 60 participants randomized to receive HD-TIV, 59 (98%) received both doses. Abbreviations: HD-TIV, high-dose trivalent; SD-QIV, standard-dose quadrivalent.
