EARLY RELEASE: Effectiveness of Homologous and Heterologous COVID-19 Booster Doses Following 1 Ad.26.COV2.S (Janssen [Johnson & Johnson]) Vaccine Dose Against COVID-19-Associated Emergency Department and Urgent Care Encounters and Hospitalizations Amon...

Published on March 29, 2022

This report describes vaccine effectiveness of COVID-19 booster doses after one dose of the Johnson & Johnson COVID-19 vaccine against emergency department, urgent care visits, and hospitalizations.

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