What should I do if I can't find my immunization/vaccination records?
If you can’t find your immunization/vaccination records, you may need to get vaccinated again. While this is not ideal, it is safe to repeat vaccines. Your doctor may also be able to do blood tests to see if you are already immune to certain diseases, so you do not have to repeat those vaccinations.
Ctrs. for Disease Control & Prevention, Vaccine Information for Adults: Keeping Your Vaccine Records Up to Date, http://www.cdc.gov/vaccines/adults/vaccination-records.html - record-vacc. ↑