Incidence rates of tuberculosis and incidence rate ratios among child contacts, by individual antigen ELISpot results at recruitment.

aStreptokinase streptodornase (SKSD), a non-tuberculosis control antigen.
bAdjusted for age, sex, isoniazid preventive therapy given to contacts exposed to drug sensitive tuberculosis and BCG vaccination.

a. 链激酶-链道酶（Streptokinase streptodornase, SKSD），属于非结核对照抗原。
b. 经年龄、性别、药物敏感性结核病接触者的异烟肼预防性治疗及卡介苗（Bacillus Calmette-Guérin, BCG）接种校正。