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Table 1 Transmission rate of tuberculosis from pediatric index cases[1525]. n.a. = not available

From: Clinical peculiarities of tuberculosis

Index case (age/smear) Transmission rate to pediatric contacts
n (%)
Transmission rate to adult contacts
n (%)
Transmission rate to contacts
n (%)
Reference
9 years
Smear positive
n.a. n.a. 56/27 (20%) Curtis et al, 1999 [20]
7 years
Smear positive
22/169 (13%) 19/49 (38,7%) 41/218 (18,8%) Cardona et al, 1999 [21]
4 months
Smear positive
0/44 (0%) 1/142 (0,7%) 1/186 (0,5%) Ciofi degli atti et al, 2011 [25]
7 years
Smear positive
1/16 (6,7%) 4/211 (1,9%) 5/227 (2,2%) Lee et al, 2005 [22]
10 years
n.a.
21/29 (72,4%) n.a. 21/29 (72,4%) Molicotti et al, 2008 [23]
16 years
Smear positive
67/765 (8,7%) 0/172 (0%) 67/937 (7,1%) Caley et al, 2010 [18]
9 years
Smear negative
85/200 (42,5%) n.a. 85/200 (42,5%) Paranjothy et al, 2008 [19]
4 months
Smear positive
n.a. n.a. 17/525 (3,2%) Reynolds et al, 2006 [24]
15 years
Smear positive
58/559 (10,3%) 7/67 (10,4%) 65/626 (10,3%) Phillips et al, 2004 [15]
13 years
Smear positive
195/486 (40%) 12/40 (30%) 207/526 (39,3%) Sacks et al, 1985 [16]
15 years
Smear negative
20/52 (37,7%) 0/15 (0%) 20/67 (29,8%) Baghaie et al, 2012 [17]