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Table 1 Characteristics of index and subsequent cases in households where transmission was not refuted

From: Recent household transmission of tuberculosis in England, 2010–2012: retrospective national cohort study combining epidemiological and molecular strain typing data

  Index case (n = 718) Subsequent cases (n = 928)
Sex
 Male 358/715 (50.1%) 481/924 (52.1%)
Age (years)
 0–14 97/718 (13.5%) 364/928 (39.2%)
 15–44 471/718 (65.6%) 442/928 (47.6%)
 45–64 113/718 (15.7%) 93/928 (10.0%)
 65+ 37/718 (5.2%) 29/928 (3.1%)
Country of birtha
 UK 210/685 (30.7%) 411/882 (46.6%)
 India 129/685 (18.8%) 138/882 (15.7%)
 Pakistan 78/685 (11.4%) 68/882 (7.7%)
 Nepal 23/685 (3.4%) 24/882 (2.7%)
 Somalia 59/685 (8.6%) 72/882 (8.2%)
Site of disease
 Pulmonary 538/715 (75.2%) 603/903 (66.8%)
  1. aTop five countries of birth by number of cases notified in England between 2010 and 2012