[1
]Influenza Division, Centers for Disease Control and Prevention, Atlanta, GA
[2
]Marshfield Clinical Research Institute, Marshfield, WI
[3
]Baylor Scott and White Health, Texas A&M College of Medicine, Temple, TX
[4
]University of Pittsburgh Schools of Health Sciences, Pittsburgh, PA
[5
]Kaiser Permanente Washington Health Research Institute, Seattle, WA
[6
]University of Michigan School of Public Health, Ann Arbor, MI
[7
]Colorado Department of Public Health and Environment, Denver, CO
[8
]Georgia Emerging Infections Program, Atlanta VA Medical Center, Emory University,
Atlanta, GA
[9
]University of Rochester School of Medicine and Dentistry, Rochester, NY
[10
]Ohio Department of Health, Columbus, OH
[11
]Michigan Department of Health and Human Services, Lansing, MI
[12
]California Emerging Infections Program, Oakland, CA
[13
]Minnesota Department of Health, St. Paul, MN
[14
]Maryland Department of Health and Mental Hygiene, Baltimore, MD
[15
]Salt Lake County Health Department, Salt Lake City, UT
[16
]New York State Emerging Infections Program, New York State Department of Health, Albany,
NY
[17
]Vanderbilt University, Nashville, TN
[18
]Oregon Department of Public Health, Portland, OR
[19
]New Mexico Department of Health, Sante Fe, NM
[20
]Connecticut Emerging Infections Program, Yale School of Public Health, New Haven,
CT
[21
]Immunization Services Division, Centers for Disease Control and Prevention, Atlanta,
GA