Please be aware that pregnancy does not provide a waiver from the TB test or chest X-ray, if it is needed.
The person can defer the X-ray until after delivery, but the Civil Surgeon cannot sign the I-693 until it has been completed, including any necessary follow up treatment.
Here are the
Q & A from November 2009 when new guidelines were introduced regarding TB testing. The web version is
here. See the questions :
Q. Are there any exceptions to the initial TB testing requirement?
Q. When is a chest x-ray required?
Q. If a chest x-ray is required, will USCIS accept Form I-693 without the full and formal chest x-ray report?
Q. Will USCIS accept a Form I-693 if the civil surgeon performed a chest x-ray without the initial TB test (either TST or IGRA)?
Q: I am pregnant (or possibly pregnant) and I have a positive initial screening result. Do I still need a chest x-ray or will USCIS accept Form I-693 without an x-ray?
Although that is now quite old, it was still in force in November 2012 as evidenced in this
Q & A document for Civil Surgeons.
Q21. If a pregnant applicant needs an X-ray, should the civil surgeon give her the option to have the chest X-ray during her pregnancy or automatically defer until after she has given birth?
A21. A pregnant applicant should be given the option to have the chest X-ray during her pregnancy or defer the X-ray until after delivery. Based on the CDC’s Tuberculosis Component of Technical Instructions, if the applicant decides to undergo an X-ray during pregnancy, the possible risks of radiation to the fetus should be explained to her, and informed consent should be obtained and confirmed by having the applicant sign a consent form.
If the applicant defers the radiograph until after delivery, the civil surgeon cannot sign the medical examination form until the radiograph is performed and interpreted, and treatment for Class A pulmonary TB disease, if needed, is completed. See page 12 of the TB Technical Instructions.
With the introduction of the new TB Technical Instructions, effective May 1, 2008, a previous waiver for pregnant women was rescinded
http://www.cdc.gov/immigrantrefugeeh...tb-ti-memo.pdf (page 2 of 3) or
http://www.cdc.gov/immigrantrefugeeh...b-ti-civil.pdf (page 11).
• A chest radiograph is required for all applicants with a tuberculin skin test (TST) reaction of 5 mm or greater of induration,
including pregnant (or possibly pregnant) women. Previously, the chest radiograph could be waived for a pregnant applicant if she had a scar or other evidence of BCG vaccination and denied having any TB-related symptoms. This exception is no longer permissible. If the applicant decides to undergo a radiograph during pregnancy, the possible risks of radiation to the fetus should be explained to her and informed consent obtained, confirmed by a signed consent form.
If she wishes, the applicant may defer the radiograph until after delivery, but the civil surgeon cannot sign the medical examination form until the radiograph is performed and interpreted, and treatment for Class A pulmonary TB disease, if needed, is completed.
I'm pretty sure there has been no change since then. I have looked on the CDC site and the same instructions are still shown.
The USCIS site has a page about
vaccinations requirements and also references a
CDC: Guidelines for Vaccinating Pregnant Women which indicates which vaccines are appropriate and which may be waived.