Effectiveness of Canada’s tuberculosis surveillance strategy in identifying immigrants at risk of developing and transmitting tuberculosis: a population-based retrospective cohort study

by Leyla Asadi, Courtney Heffernan, Dick Menzies et al.
The Lancet Public Health, Vol. 2, No. 10, e450–e457, October 2017

8 pp. 295 kB

In Canada, tuberculosis disproportionately affects the foreign-born population. The national tuberculosis medical surveillance programme aims to prevent these cases. Individuals referred for further in-country surveillance (referrals) have a history of active tuberculosis or have features of old, healed tuberculosis on chest radiograph; those not referred (non-referrals) do not undergo surveillance. The authors aimed to examine the risk of transmission arising from referrals versus non-referrals.

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