Table 4. Reported SARS-CoV-2 transmission by children in households and close contact transmission studies, 30 December 2019–10 August 2020 (n = 19).

Authors	Number of children included	Number of paediatric index casesa	Number of infected contacts	Number of contacts followed up
Children under 2 years of age
Canarutto et al. [20]	1	0	0	Not reported
Le et al. [21]	1	0	0	Not reported
Nassih et al. [30]	1	0	0	1
Qui et al. [23]	1	0	0	Not reported
Children aged 0–10 years
Cai et al. [17]	10	1	2	Not reported
Danis et al. [19]	1	0	0	172
Jung et al. [28]	1	1	1	1,206
Lin et al. [22]	1	1	1	Not reported
Wongsawat et al. [26]	3	0	0	2
Zhu et al. [35]	20	3	5	Not reported
Teenagers
Lucar et al. [29]	1	1	0	11
Szablewski et al. [27]	1	1	260	597
Age unspecified
Laxminarayan et al. [31]	42,618	42,618	4,110	57,415
Mannheim et al. [32]	64	4	Not reported	Not reported
Posfay-Barbe et al. [24]	39	3	4	111
Somekh et al. [33]	58	1	Not reported	94
Van Der Hoek et al. [34]	31	2	2b	Not reported
Wu et al. [18]	74	0	0	Not reported
Xu et al. [25]	Unclearc	3	3	Not reported
Total	42,926	42,639	4,381	Not estimable

SARS-CoV-2: severe acute respiratory syndrome coronavirus 2.

^a Some cases included may be double counted across studies.

^b The source in one of these cases was aged 15–20 years.

^c Unclear how many children included overall.