Table 2

Risk of TB in HCWs by most frequent country of birth

Country of birthn HCW TB cases (population denominator*)n Non-HCW TB cases (population denominator*)% HCW TB cases†Rate of TB in HCW per 100 000 (95% CI)Rate of TB in non-HCW per 10 000 (95% CI)Incidence rate ratio (95% CI)
All‡2320 (1 983 571)27 681 (34 290 136)7.723.4 (22.5 to 24.4)16.1 (16.0 to 16.3)1.5 (1.4 to 1.5)
India559 (55 466)5913 (470 349)8.6201.6 (185.2 to 219.0)251.4 (245.1 to 257.9)0.8 (0.7 to 0.9)
UK334 (1 550 756)6138 (28 689 940)5.24.3 (3.9 to 4.8)4.3 (4.2 to 4.4)1.0 (0.9 to 1.1)
Philippines249 (40 187)322 (64 071)43.6123.9 (109.0 to 140.3)100.5 (89.8 to 112.1)1.2 (1.0 to 1.5)
Zimbabwe200 (24 503)459 (77 207)30.3163.2 (141.4 to 187.5)118.9 (108.3 to 130.3)1.4 (1.2 to 1.6)
Pakistan128 (13 923)3860 (395 444)3.2183.9 (153.4 to 218.6)195.2 (189.1 to 201.5)0.9 (0.8 to 1.1)
Nigeria106 (27 289)660 (139 454)13.877.7 (63.6 to 94.0)94.7 (87.6 to 102.2)0.8 (0.7 to 1.0)
Nepal§7465410.2
South Africa63 (13 900)159 (146 808)28.490.6 (70.0 to 116.0)21.7 (18.4 to 25.3)4.2 (3.2 to 5.5)
Kenya44 (10 703)331 (106 091)11.782.2 (59.7 to 110.4)62.4 (55.9 to 69.5)1.3 (1.0 to 1.8)
Somalia31 (2937)1535 (79 288)2.0211.1 (143.4 to 299.6)387.2 (368.1 to 407.1)0.5 (0.4 to 0.8)
All other countries394 (143 907)6627 (4 121 484)5.632.3 (29.2 to 35.7)32.2 (31.4 to 32.9)1.0 (0.9 to 1.1)
  • *For a single year.

  • †Proportion of TB cases from each country which are HCWs.

  • ‡Includes those with unknown country of birth.

  • §Population estimates not available for Nepal, so rates and incidence rate ratio could not be calculated.

  • HCWs, healthcare workers.