Relative effectiveness of high dose versus standard dose influenza vaccines in older adult outpatients over four seasons, 2015–16 to 2018–19

G.K. Balasubramani, Won Suk Choi, Mary Patricia Nowalk, Richard K. Zimmerman, Arnold S. Monto, Emily T. Martin, Edward A. Belongia, Huong Q. McLean, Manjusha Gaglani, Kempapura Murthy, Michael L. Jackson, Lisa A. Jackson, Jessie R. Chung, Sarah Spencer, Alicia M. Fry, Manish M. Patel, Brendan Flannery