Most of the cultural conversation about vaccines focuses on children: Which children are getting them, which children aren’t and why, and how those decisions impact the rest of the population. So if you have memories of going to a pediatrician or health clinic as a kid, you might assume that you’ve had all the vaccinations you’ll ever need. You never have to think about it again, right? Unfortunately that’s not how immunity works.

“Adults need vaccines, too, to help them protect against preventable diseases,” David Kim, M.D., M.P.H., deputy associate director for Adult Immunization in the Immunization Services Division at the Centers for Disease Control and Prevention (CDC), tells SELF.

Read more at Self.