Abstract
Adults 65 years or older are more susceptible to infectious diseases, representing a significant public health concern worldwide. Although newer vaccines have been developed for older adults, confusion over frequently changing guidelines often contributes to vaccine hesitancy and low vaccination rates. An American Academy of Allergy, Asthma & Immunology work group was convened to provide a clearer summary of these guidelines from the Advisory Committee on Immunization Practices and the Centers for Disease Control and Prevention. This article reviews the epidemiology and pathology of key infectious diseases in older adults, the mechanism of action of the vaccines targeting these diseases, commercially available vaccines, their potential side effects, and current vaccination recommendations for adults 65 years or older. The primary focus of this work is on adults 65 years or older; however, when possible, newer vaccination recommendations that begin at age 50 years have also been included. The diseases covered in this review include coronavirus disease 2019, pneumococcal pneumonia, respiratory syncytial virus, influenza, shingles, and tetanus. A summary table of vaccination guidelines is also included in Table III.
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