Effectiveness of Canada's tuberculosis surveillance strategy in identifying immigrants at risk of developing and transmitting tuberculosis: a population-based retrospective cohort study Dr Leyla Asadi, MD, Courtney Heffernan, MA, Prof Dick Menzies, MD, Prof Richard Long, MD The Lancet Public Health Volume 2, Issue 10, Pages e450-e457 (October 2017) DOI: 10.1016/S2468-2667(17)30161-5 Copyright © 2017 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND license Terms and Conditions
Figure 1 Foreign-born migrants to Alberta according to tuberculosis risk category The Lancet Public Health 2017 2, e450-e457DOI: (10.1016/S2468-2667(17)30161-5) Copyright © 2017 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND license Terms and Conditions
Figure 2 Transmission events arising from permanent residents who developed culture-positive pulmonary tuberculosis Dashed lines represent transmissions to close contacts. Secondary cases were not also counted as TST conversions. TST=tuberculin skin test. The Lancet Public Health 2017 2, e450-e457DOI: (10.1016/S2468-2667(17)30161-5) Copyright © 2017 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND license Terms and Conditions