Comparative Effectiveness and Antibody Responses to Moderna and Pfizer-BioNTech COVID-19 Vaccines among Hospitalized Veterans — Five Veterans Affairs Medical Centers, United States, February 1–September 30, 2021

Kristina L. Bajema, Rebecca M. Dahl, Steve L. Evener, Mila M. Prill, Maria C. Rodriguez‐Barradas, Vincent C. Marconi, David O. Beenhouwer, Mark Holodniy, Cynthia Lucero‐Obusan, Sheldon T. Brown, Maraia Tremarelli, Monica Epperson, Lisa Mills, Sohee Park, Gilberto Rivera-Dominguez, Rosalba Gomez Morones, Ghazal Ahmadi-Izadi, Rijalda Deović, Chad Mendoza, Chan Young Jeong, Stephanie J. Schrag, Elissa Meites, Aron J. Hall, Miwako Kobayashi, Meredith McMorrow, Jennifer R. Verani, Natalie J. Thornburg, Diya Surie, SUPERNOVA COVID-19, Surveillance Group, Surveillance Platform for Enteric and Respiratory Infectious Organisms at the VA (SUPERNOVA) COVID-19 Surveillance Group, Joy Burnette, Gustavo Capo, Lauren Epstein, Julia W. Gallini, Telisha Harrison, Amy Hartley, Liliana Hernández, Elena Martín Morales, Nina Patel, Kim Rooney, Tehquin Tanner, Ernest Tate, Ashley Tunson, Alexis Whitmire, Juton R. Winston, Katherine Elliot, Ilda Graham, Diki Lama, Ismael Pena, Adrienne Perea, Guerry Anabelle Perez, Johane Simelane, Sarah Smith, Gabriela Tallin, Amelia Tisi, Alonso Arellano Lopez, Miguel Covarrubias Gonzalez, Bashir Lengi, Mariana Vanoye Tamez, Babak Aryanfar, Ian Lee-Chang, Anthony Matolek, Aleksandra Poteshkina, Saadia Naeem, Evan Goldin, Madhuri Agrawal, Jessica Ivonne Hinojosa‐López, Theresa Peters, Geliya Kudryavtseva, Jordan Cates, Anita Kambhampati