Flannery, B. ., Smith, C. ., Garten, R. ., Levine, M. ., , Jackson, M. ., … Fry, A. . (2018). Influence of Birth Cohort on Effectiveness of 2015-2016 Influenza Vaccine Against Medically Attended Illness Due to 2009 Pandemic Influenza A(H1N1) Virus in the United States. The Journal of Infectious Diseases. https://doi.org/10.1093/infdis/jix634 (Original work published 2018)