• Arriola CS, Anderson EJ, Baumbach J, Bennett N, Bohm S, Hill M, Lindegren ML, Lung K, Meek J, Mermel E, Miller L, Monroe ML, Morin C, Oni O, Reingold A, Schaffner W, Thomas A, Zansky SM, Finelli L, Chaves SS. Does Influenza Vaccination Modify Influenza Severity? Data on Older Adults Hospitalized With Influenza During the 2012-2013 Season in the United States. The Journal of infectious diseases. 2015 Mar 27. PMID: 25821227 [PubMed].

Abstract 

 Some studies suggest that influenza vaccination might be protective against severe influenza outcomes in vaccinated persons who become infected. We used data from a large surveillance network to further investigate the effect of influenza vaccination on influenza severity in adults aged ≥50 years who were hospitalized with laboratory-confirmed influenza.