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. 2023 Aug 8;19(2):2239088. doi: 10.1080/21645515.2023.2239088

Table 3.

Local BCG injection site reactions, by prior BCG vaccination history.

  Total BCG (Stage 1 & 2) BCG-naïve BCG-revaccination p-value
  n = 3379 n = 1127 n = 2252  
Pain 1549 (45.8%) 399 (35.4%) 1150 (51.0%) <0.001
 None 1830 (54.2%) 728 (64.6%) 1102 (49.0%)  
 Grade 1 1262 (37.4%) 312 (27.7%) 950 (42.1%) 0.2a
 Grade 2 268 (7.9%) 82 (7.3%) 186 (8.3%)
 Grade 3 16 (0.5%) 4 (0.4%) 12 (0.5%)
 Grade 4 3 (0.1%) 1 (0.1%) 2 (0.1%)
 Onset, days 2 (1–3) 2 (1–3) 2 (1–3) 0.5
 Duration, days 5 (2–9) 3 (2–9) 5 (3–9) <0.001
Tenderness 2312 (68.4%) 797 (70.6%) 1515 (67.3%) 0.04
 None 1067 (31.6%) 330 (29.3%) 737 (32.7%)  
 Grade 1 1686 (49.9%) 610 (54.1%) 1076 (47.8%) <0.001a
 Grade 2 484 (14.3%) 161 (14.3%) 323 (14.3%)
 Grade 3 139 (4.1%) 25 (2.2%) 114 (5.1%)
 Grade 4 3 (0.1%) 1 (0.1%) 2 (0.1%)
 Onset, days 2 (1–3) 2 (1–3) 2 (1–2) 0.8
 Duration, days 8 (4–14) 7 (3–14) 8 (4–13) 0.5
Erythema 3101 (91.7%) 976 (86.6%) 2125 (94.4%) <0.001
 None 278 (8.3%) 151 (13.4%) 127 (5.6%)  
 Grade 1 2997 (88.7%) 954 (84.7%) 2043 (90.7%) 0.05a
 Grade 2 99 (2.9%) 21 (1.9%) 78 (3.5%)
 Grade 3 5 (0.2%) 1 (0.1%) 4 (0.2%)
 Grade 4 0 (0.0%) 0 (0.0%) 0 (0.0%)
 Onset, days 2 (1–2) 2 (1–2) 2 (1–2) <0.001
 Mean [SD] 2.1 [2.4] 2.5 [3.3] 2.0 [1.8]  
 Duration, days 13 (10–14) 14 (10–30) 13 (10–14) <0.001
 Mean [SD] 22.2 [26.5] 28.4 [31.1] 19.4 [23.6]  
 Maximal diameter, cm 1.5 (1.0, 2.0) 1.0 (1.0, 2.0) 1.5 (1.0, 2.4) <0.001
 Mean [SD] 1.9 [1.4] 1.7 [1.4] 2.0 [1.4]  
Swelling 2539 (75.1%) 725 (64.3%) 1814 (80.5%) <0.001
 None 840 (24.9%) 402 (35.7%) 438 (19.5%)  
 Grade 1 2243 (66.3%) 635 (56.3%) 1608 (71.4%) 0.6a
 Grade 2 282 (8.3%) 87 (7.7%) 195 (8.7%)
 Grade 3 14 (0.4%) 3 (0.3%) 11 (0.5%)
 Grade 4 0 (0.0%) 0 (0.0%) 0 (0.0%)
 Onset, days 2 (1–3) 2 (1–3) 2 (1–3) <0.001
 Mean [SD] 2.8 [3.5] 3.3 [3.6] 2.7 [3.4]  
 Duration, days 10 (5–14) 11 (4–21) 9 (5–13) <0.001
 Mean [SD] 14.1 [17.6] 18.8 [22.6] 12.3 [14.7]  
 Maximal diameter, cm
1.0 (0.5, 2.0)
1.0 (0.7, 2.0)
1.0 (0.5, 2.0)
0.5
  Total BCG (Stage 1 & 2) BCG-naïve BCG-revaccination  
 
n = 3122
n = 1018
n=2104
 
Itch* 1535 (49.2%) 472 (46.4%) 1063 (50.5%)  
 None 1587 (50.8%) 546 (53.6%) 1041 (49.5%)  
 Grade 1 1474 (47.2%) 441 (43.2%) 1033 (49.1%) 0.001a
 Grade 2 61 (2.0%) 31 (3.1%) 30 (1.4%)
 Grade 3 0 (0.0%) 0 (0.0%) 0 (0.0%)
 Grade 4 0 (0.0%) 0 (0.0%) 0 (0.0%)
 Onset, days 3 (2–7) 4 (2–7) 3 (2–7) 0.2
 Duration, days 10 (5–20) 10 (5–15) 10 (5–20) 0.5

BCG recipients in Stage 1 and Stage 2. Data are presented as n (%) or median (interquartile range), unless otherwise specified.

*Itch evaluated in 6-month follow-up questionnaire.

ap-value comparing reaction severity Grades 1 to 4, between BCG-naïve and BCG-revaccination groups.