The #1 Cause of I-693 Delays: Vaccination Gaps (Fix Them Before You Book)

Vaccination gaps are the most common — and most preventable — cause of delay in the immigration medical exam. The fix happens before you ever book.

Immigration Rules Are Not Routine Adult Care

Most applicants assume they’re “up to date” because they had a physical last year or got their childhood shots. But the CDC immunization requirements for immigration are their own standard — specific, absolute, and periodically updated. Requirements commonly missed include Tdap (not just an old tetanus shot), varicella, and age-specific requirements applicants never encountered in routine care.

Documentation Beats Re-Vaccination

Here’s the part that saves money and needles: a documented dose counts; a remembered dose doesn’t. Records in any language are acceptable. Before booking, gather every vaccine record you can find — childhood cards, school records, employer health files, pharmacy printouts, records from your home country. What you can document, you don’t repeat.

The Pre-Booking Audit

Line your records up against the current CDC Technical Instructions for civil surgeons (the vaccination section is public). Note the genuine gaps. Then book — either having filled the gaps with your own provider or planning to complete them at the exam. Applicants who do this audit routinely turn a multi-visit process into a single appointment.

Frequently Asked Questions

Which vaccines do immigration applicants most often miss?

Tdap and varicella are the most commonly missed requirements, along with age-specific doses that differ from routine adult schedules.

Are vaccine records from another country acceptable?

Yes. Written documentation in any language is acceptable evidence of vaccination — documented doses do not need to be repeated.

Can I get missing vaccines at the exam?

Missing vaccines can typically be administered or coordinated as part of the process, but arriving with complete records is always faster and cheaper.

Watch the full video above, and explore the rest of the series on our YouTube channel.

This article is educational information about the immigration medical examination process. It is not legal advice and does not create a physician–patient relationship. For legal questions about your case, consult a licensed immigration attorney.