Setting: A local government area in North West England with a significant population of Indian subcontinent (ISC) ethnic origin and a high incidence of tuberculosis.
Objective: To assess whether return visits to the ISC are associated with an increased risk of developing clinical tuberculosis.
Methods: Analysis of data prospectively obtained from ISC patients diagnosed with TB in 1998-2002 (cases) and age and sex matched ISC patients in two local GP practices (controls).
Results: There is at best weak evidence of association between case status and whether individuals have had a repeat visit to the subcontinent within 3 years of notification in this cohort; odds ratio 1.26 (95% CI (0.95, 1.76)); Fishers exact test P=0.09.
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