Risk Factors for Not Completing a 2-Dose Primary Series of Messenger RNA COVID-19 Vaccination in a Large Health Care System in Southern California: Retrospective Cohort Study by Stanley Xu, Vennis Hong, Lina S Sy, Katia J Bruxvoort, Bruno Lewin, Bing Han, Kimberly J Holmquist, Lei Qian

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Post-marketing safety study to evaluate pregnancy outcomes among recipients of hepatitis B vaccines by Katia J Bruxvoort, Lina S Sy, Jeff Slezak, Bradley K Ackerson, Lei Qian, Sijia Qiu, Zendi Solano, Kristi Reynolds

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Ischemic Stroke After Bivalent COVID-19 Vaccination: Self-Controlled Case Series Study by Stanley Xu, Lina S Sy, Vennis Hong, Kimberly J Holmquist, Lei Qian, Paddy Farrington, Katia J Bruxvoort, Nicola P Klein, Bruce Fireman, Bing Han, Bruno J Lewin

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Real-world effectiveness of the mRNA-1273 vaccine against COVID-19: Interim results from a prospective observational cohort study by Katia J. Bruxvoort, Lina S. Sy, Lei Qian, Bradley K. Ackerson, Yi Luo, Gina S. Lee, Yun Tian, Ana Florea, Harpreet S. Takhar, Julia E. Tubert, Carla A. Talarico, Hung Fu Tseng

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Effectiveness and durability of mRNA-1273 BA.4/BA.5 bivalent vaccine (mRNA-1273.222) against SARS-CoV-2 BA.4/BA.5 and XBB sublineages by Bradley K. Ackerson, Katia J. Bruxvoort, Lei Qian, Lina S. Sy, Sijia Qiu, Julia E. Tubert, Gina S. Lee, Jennifer H. Ku, Ana Florea, Yi Luo, Radha Bathala, Julie Stern, Soon K. Choi, Harpreet S. Takhar, Michael Aragones, Morgan A. Marks, Evan J. Anderson, Cindy Ke Zhou, Tianyu Sun, Carla A. Talarico, Hung Fu Tseng

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