Diseases do not have age limits. Vaccines are not just for kids, adults need protection too. Regardless of age, adults need immunizations to stay healthy. With time, immunity from childhood vaccines can wear off, leaving adults at risk for diseases. With adulthood comes responsibility, including the need to protect yourself and those around you.
The Advisory Committee on Immunization Practices (ACIP) provides recommendations for the routine administration of vaccines, along with schedules outlining the appropriate timing, dosage, and contraindications. The recommended vaccines for adults can be found here.
More information about the Iowa Adult Immunization Program can be found here.