Start here: Obtain childhood immunization records. The first step is to obtain a baseline immunology report to see which standard childhood vaccines you had (or did not have).

How do you find your old vaccine records? Is a child protected if they haven't had all their shots? Who's at risk, and does polio spread in pools? Here’s a guide to facing a polio outbreak in 2022.

The answer depends on when you were born, your vaccine records and whether you plan to travel internationally. Updated March 13, 2025. 7 min. A nurse prepares a measles, mumps and rubella vaccine.