Tuberculosis (tb) is quite common in many countries. It is not unknown in the United States but the numbers seem to be declining. The Center for Disease Control and Prevention reported 15,078 cases in the US in 2002.

Most countries now give children the BCG vaccine, which often leaves a small but visible scar at the site of immunization (often the upper arm). Children who have had this vaccine may get a positive reaction to a skin test (Mantoux) but it is generally smaller in size and duration. This test must be administered and “read” by a skilled medical person about 2-3 days later.

Children who have been diagnosed with TB may have received a preventive medication called isoniazid (INH). The usual regimen is for 9 months although some countries may administer it for a shorter period of time if the child has not “had” it but rather merely been exposed to someone who did.

You will definitely want to have your medical professional administer a PPD (purified protein derivative) Mantoux test upon return to the country.

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