Table 1.

Summary of outbreak-associated illnesses — United States and Canada. (October 4, 2016–December 13, 2019)

Demographics and Outcomes	United States n (%)	Canada n (%)	Total n (%)
Cases	36	12	48
States/Provinces	17	3
Isolation Dates	11/23/2016 – 12/13/2019	08/04/2016 – 02/19/2019	8/04/2016–12/13/2019
Age range (median)	0–96 (67)	22–96 (75)	0–96
Female	21/36 (58)	7/12 (58)	28/48 (58)
Asian race	17/28 (61)	Race data not collected	17/28 (61)
Hospitalized	31/33 (94)	6/8 (75)	37/41 (90)
Deaths	4	0	4
Pregnancy-associated*	6 (29)	1 (14)	7 (25)
Allele range	8[0–38]	N/A	8[0–38]

^*Two pregnancies resulted in fetal losses.