• Blain A, MacNeil J, Wang X, Bennett N, Farley MM, Harrison LH, Lexau C, Miller L, Nichols M, Petit S, Reingold A, Schaffner W, Thomas A, Clark T, Cohn A, Briere E. Invasive Haemophilus influenzae Disease in Adults ≥65 Years, United States, 2011. Open forum infectious diseases. 2014 Sep;1(2). ofu044. PMID: 25734116 [PubMed]. PMCID: PMC4281775.

Abstract 

Since the introduction of the Haemophilus influenzae serotype b vaccine, H influenzae epidemiology has shifted. In the United States, the largest burden of disease is now in adults aged ≥65 years. However, few data exist on risk factors for disease severity and outcome in this age group.