TABLE 1.

Characteristics of 32 patients with chronic urticaria after repeated immunization with mRNA vaccines for SARS‐CoV‐2

Pat.	Sex	Age (years)	History of atopy	Vaccine	dose	Days to urticaria onset after immunization	Sympto‐matic SARS‐CoV‐2 infection	BAT to mRNA vaccine	BAT on donor basophils
1	F	42	No	BNT 162b2	3rd	30	Yes	N/D	N/D
2	M	16	No	BNT 162b2	2nd	30	No	N/D	N/D
3	M	34	No	mRNA‐1273	3rd	14	No	Positive	Negative
5	F	36	No	mRNA‐1273	3rd	10	No	Positive	Negative
6	M	42	No	mRNA‐1273	3rd	6	No	N/D	N/D
7	F	21	Yes	mRNA‐1273	3rd	10	No	N/D	N/D
8	F	50	No	mRNA‐1273	3rd	9	No	N/D	N/D
9	F	32	Yes	mRNA‐1273	3rd	11	No	N/D	N/D
10	M	46	Yes	mRNA‐1273	3rd	10	Yes	N/D	N/D
11	F	27	Yes	mRNA‐1273	3rd	14	No	N/D	N/D
12		63	Yes	mRNA‐1273	3rd	11	No	N/D	N/D
13	F	56	No	mRNA‐1273	3rd	15	No	N/D	N/D
14	M	34	No	mRNA‐1273	3rd	3	No	Positive	Negative
15	F	46	No	mRNA‐1273	3rd	34	No	Positive	N/D
16	M	44	No	mRNA‐1273	3rd	11	No	N/D	N/D
17	F	54	Yes	mRNA‐1273	3rd	7	No	N/D	N/D
18	F	40	No	mRNA‐1273	3rd	10	Yes	N/D	N/D
19	F	45	No	mRNA‐1273	3rd	10	No	N/D	N/D
20	F	47	No	mRNA‐1273	3rd	10	Yes	Positive	N/D
21	M	38	No	mRNA‐1273	3rd	11	No	N/D	N/D
22	F	48	Yes	mRNA‐1273	3rd	10	No	Positive	Negative
23	F	34	No	mRNA‐1273	3rd	10	No	N/D	N/D
24	F	41	No	mRNA‐1273	3rd	10	No	Positive	Negative
25	F	38	No	mRNA‐1273	3rd	9	No	N/D	N/D
26	F	63	No	mRNA‐1273	3rd	14	No	N/D	N/D
27	M	38	No	mRNA‐1273	3rd	10	No	N/D	N/D
28	M	61	No	mRNA‐1273	3rd	4	No	N/D	N/D
29	M	37	No	mRNA‐1273	3rd	14	No	N/D	N/D
30	F	66	No	mRNA‐1273	2nd	32	No	N/D	N/D
31	M	44	No	mRNA‐1273	3rd	21	No	N/D	N/D
32	M	64	No	mRNA‐1273	3rd	10	No	N/D	N/D

Abbreviations: BAT, basophil activation test; F, female; M, male; N/D, not done.