You are never old to get vaccinated! Adults also need immunizations to protect their health and prevent the spread of serious diseases. Even if you have taken all the vaccinations as a child, your immunity may wear off by adulthood. Getting vaccinated is a lifelong, life-protecting job. Vaccinations are one of the most cost-effective strategies available for adults today. Besides protecting the vaccinated person from developing potentially severe diseases, vaccines also help protect the community by reducing the spread of infectious diseases.