Where are you coming from that you are coming onto the Mainland?
If you are from any outlying islands of the American continent (Jamaica, Puerto Rico, Trinidad etc.) then I would suggest contacting
either
Give bro Djheuty a call and see about vaccine deferments.
http://www.rvbeypublications.com/id4.htmlor Phil valentine
To my understanding any of these three could get you right in your standing to help with this issue. I am sure this can be of some use.
All the best family.