回複：I-693 is effective only for three months, not one year!!!

This is I copied from USCIS website. Your info is misleading. When you don't know, don't answer.

Special Instructions :

The medical examination must be conducted by a civil surgeon who has been designated by USCIS. For the most current list of civil surgeons in your area, please check our Civil Surgeons Channel. To obtain by telephone the names and phone numbers of the designated civil surgeons in your area, please call USCIS' National Customer Service Center at 1-800-375-5283. You will be asked to provide your zip code. Please have a pen or pencil ready to write down the list of civil surgeons in your area.

The Centers for Disease Control and Prevention (CDC) have sent the I-693 vaccination supplement directly to the civil surgeons for them to photocopy, fill out on behalf of each applicant, and attach to Form I-693 for submission to USCIS. You may download the supplement from the Related Links to the right.

Note: When Applicants Should Get Their Medical Exam: The results of the medical examination are generally valid for only 12 months. Applicants should schedule the medical examination as close as possible to the time you file for Adjustment of Status.