tailieunhanh - FAQs Tuberculosis Component of the Technical Instructions (TIs) for the Medical Examination of Aliens in the United States

There are two situations in which the TST is not required. Applicants providing written documentation (with a health-care provider’s signature) of a TST reaction of 5 mm or greater of induration or applicants with a history of a severe reaction with blistering to a prior TST may be excluded from this requirement. Applicants in these two groups must undergo a chest radiograph. A verbal history of a positive TST reaction from the applicant is not acceptable. If the TST is not administered for one of these two reasons, the civil surgeon should not check the box next to “Tuberculin Skin Test”. | FAQs Tuberculosis Component of the Technical Instructions TIs for the Medical Examination of Aliens in the United States These questions and answers are provided for easy reference by civil surgeons offices and the Bureau of . Citizenship and Immigration Services offices. 1. At what age is a tuberculin skin test TST required A Mantoux TST must be performed on all applicants who are 2 years of age and older as well as applicants less than 2 years of age if there is evidence of contact with a person known to have tuberculosis TB or other reason to suspect TB . 2. Are there any situations in which the TST is not required for applicants 2 years of age or older There are two situations in which the TST is not required. Applicants providing written documentation with a health-care provider s signature of a TST reaction of 5 mm or greater of induration or applicants with a history of a severe reaction with blistering to a prior TST may be excluded from this requirement. Applicants in these two groups must undergo a chest radiograph. A verbal history of a positive TST reaction from the applicant is not acceptable. If the TST is not administered for one of these two reasons the civil surgeon should not check the box next to Tuberculin Skin Test in Part 2 Section 2A of the I-693 form. Instead the civil surgeon should clearly state the reason for the exception in the Remarks portion of Section 2A. 3. Should a TST be administered if a Bacille Calmette-Guérin BCG vaccination has been given in the past Yes. Because many BCG-vaccinated applicants have lived in areas where TB transmission is common the civil surgeon must perform the TST on all applicants regardless of history or evidence of BCG vaccination unless one of the two exceptions to TST administration noted in question 2 exists. 4. How should the civil surgeon interpret the TST if the applicant has received BCG in the past Because many BCG-vaccinated applicants have lived in areas of the world where TB transmission .