Use of COVID-19 vaccines after reports of adverse events among adult recipients of Janssen (Johnson & Johnson) and mRNA COVID-19 vaccines (Pfizer-BioNTech and Moderna): update from the Advisory Committee on Immunization Practices - United States, July 2021 - Rosenblum, H G; Hadler, S C; Moulia, D (MMWR Morb Mortal Wkly Rep, 2021)