Table 1.

Main characteristics and quality of reviewed studies.

Study (n = 20)	Timeline (mm.dd)	Location	N = 1810	Age (yr) a	Gender (M/F)	Quality ⍭
Dong, Y. et al.	Jan 06 - Feb 08	China	728	10 [4–15]	418/310	*********
Peng, H. et al.	Dec 08 - Feb 29	Wuhan, China	75	6.06 ± 4.78	44/31	********
Bai. K. et al.	Jan 19 - Mar 12	Chongqing, China	25	11 [6.3−14.5]	14/11	********
Du, H. et al.	Jan 28 - Feb 28	Wuhan, China	182	6 [0.01−15]	120/62	*********
Qiu, H. et al.	Jan 17 - Mar 01	Zhejiang, China	36	8.3 ± 3.5	23/13	********
Shen, Q. et al.	Jan 08 - Feb 26	China	9	8 [1–12]	3/6	*******
Song, W. et al.	Jan 01 - Mar 17	Hubei, China	16	8.5 [11.5−14]	10/6	*******
Tan, Y.P. et al.	Jan 27 -Mar 10	Changsha, China	10	7 [1–12]	3/7	*******
Zheng, F. et al.	Feb 01- Feb 10	Hubei, China	25	3 [2–9]	14/11	********
Zhu, L. et al.	Jan 24 - Feb 22	China	10	9.5 [6.25−11.75]	5/5	******
Cai, J. et al.	Jan 19 - Feb 03	China	10	6.5 [4.25−8.75]	4/6	******
Lu, Y. et al.	Jan 30 - Mar 10	Wuhan, China	110	6 [2–9]	59/51	*********
Ma, H. et al.	Jan 21 - Feb 14	Wuhan, China	50	2.5 [0.9–7.0]	28/22	********
Garazzino, S. et al.	Mar 25 - Apr 10	Italy	168	2.3 [0.3–9.6]	94/74	*********
Parri, N. et al.	Mar 03-Mar 26	Italy	130	6 (0–11)	73/57	*********
Garcia-Salido, A. et al. †	Mar 01 - Apr 15	Spain	7	8.35 [4.46−11.11]	4/3	******
Foster, C.E. et al.	Mar 10 - Apr 18	Texas	57	10.7 [0.1–20.2]	32/25	*********
Zachariah, P. et al.	Mar 01 - Apr 15	New York City	50	9 [0.5−21]; 14 [8–19] b	27/23	********
Mannheim, J. et al.	Mar 05 - Apr 08	Chicago, Illinois	64	11 [7–16]	36/28	*********
Shekerdemian, L. S. †	Mar 14 - Apr 10	USA/Canada	48	13 [4.2−16.6]	25/23	*******

^†Data from PICU cases only.

^⍭Newcastle-Ottawa Scale (NOS) quality assessment rating.

^aMean ± SD or Median [IQR].

^bAge reported separately as Median [IQR] for severe and non-severe cases respectively.