[Correspondence] Prediction and prevention of tuberculosis in contacts

Targeting of treatment of latent tuberculosis infection to patients at highest risk is a key component of the prevention and control of the disease, and any measure to reach that target with less effort is valuable. Matthew Saunders and colleagues1 derived a composite risk score to predict and stratify the risk of active tuberculosis in adult contacts of index cases with pulmonary tuberculosis from an underprivileged Peruvian community. In an independent prospective validation cohort, the score retained its predictive value.

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