OBJECTIVE: To validate the currently used empirical relationship between annual risk of tuberculous infection (ARTI) and incidence and prevalence of smear-positive cases. SETTING: Two disease surveys to estimate the prevalence and incidence of tuberculosis (TB) among adults in Tiruvallur district, south India, and a tuberculin survey to estimate the ARTI among children. RESULTS: The incidence of TB was estimated to be 82 and prevalence 210 per 100,000 population and ARTI 1.6%. We estimated that 1% ARTI corresponded to 51 new and 131 prevalent cases. CONCLUSION: The currently used empirical relationship between ARTI and incidence can be used by programme managers as an effective monitoring tool.
OBJECTIVE: To validate the currently used empirical relationship between annual risk of tuberculous infection (ARTI) and incidence and prevalence of smear-positive cases. SETTING: Two disease surveys to estimate the prevalence and incidence of tuberculosis (TB) among adults in Tiruvallur district, south India, and a tuberculin survey to estimate the ARTI among children. RESULTS: The incidence of TB was estimated to be 82 and prevalence 210 per 100,000 population and ARTI 1.6%. We estimated that 1% ARTI corresponded to 51 new and 131 prevalent cases. CONCLUSION: The currently used empirical relationship between ARTI and incidence can be used by programme managers as an effective monitoring tool.
Authors: McEwen Khundi; James R Carpenter; Elizabeth L Corbett; Helena R A Feasey; Rebecca Nzawa Soko; Marriott Nliwasa; Hussein Twabi; Lingstone Chiume; Rachael M Burke; Katherine C Horton; Peter J Dodd; Ted Cohen; Peter MacPherson Journal: PLoS One Date: 2022-05-23 Impact factor: 3.752
Authors: S K Sharma; Ashish Goel; S K Gupta; Krishna Mohan; V Sreenivas; S K Rai; U B Singh; L S Chauhan Journal: Indian J Med Res Date: 2015-02 Impact factor: 2.375
Authors: Catherine R Stevenson; Nita G Forouhi; Gojka Roglic; Brian G Williams; Jeremy A Lauer; Chirstopher Dye; Nigel Unwin Journal: BMC Public Health Date: 2007-09-06 Impact factor: 3.295