Vaccines · 7 min read · Updated April 4, 2026
I-693 Vaccine Requirements Explained
The vaccine part of Form I-693 follows CDC rules. The civil surgeon looks at your age, your vaccine records, any documented immunity, and any medical exceptions to decide what is still needed.
The CDC vaccination technical instructions page currently shows a last updated date of March 11, 2025, and those instructions matter more than general vaccine advice you may find online.