Table 1.

Characteristics of study participants, April 2022 to July 2022 (n = 5,310), excluding 67 participants with non-BNT162b2 or non-CoronaVac, or undetermined, vaccination history and one participant with undetermined age

	Overall (n = 5,242)		BNT162b2-exclusive (n = 3,759)		CoronaVac-exclusive (n = 906)		BNT162b2 and CoronaVac (n = 461)		Unvaccinated (n = 116)
	Number of donors	Percentage of total	Number of donors	Percentage of subtotal	Number of donors	Percentage of subtotal	Number of donors	Percentage of subtotal	Number of donors	Percentage of subtotal
Age group (years)
1–10	136	2.6	13	0.3	64	7.0	0	0.0	59	53.2
18–19	134	2.6	121	3.2	10	1.1	2	0.4	1	0.9
20–29	943	18.0	838	22.3	61	6.7	35	7.6	9	8.1
30–39	1,183	22.6	945	25.1	124	13.7	91	19.7	23	20.7
40–49	1,439	27.5	1,008	26.8	280	30.8	143	31.0	8	7.2
50–59	1,086	20.7	651	17.3	281	30.9	145	31.5	9	8.1
60–69	321	6.1	186	4.9	88	9.7	45	9.8	2	1.8
Sex
Female	2,680	51.1	1,974	52.5	434	47.8	216	46.9	56	50.5
Male	2,548	48.6	1,787	47.5	473	52.1	245	53.1	43	38.7
Not-determinable	14	0.3	1	0.0	1	0.1	0	0.0	12	10.8
Doses received
0	116	2.2	0	0.0	0	0.0	0	0.0	116	100
1	72	1.4	38	1.1	34	3.8	0	0.0	0	0.0
2	1,174	22.4	930	24.7	223	24.6	21	4.6	0	0.0
3	3,794	72.4	2,760	73.4	621	68.4	413	89.6	0	0.0
4	86	1.6	31	0.8	28	3.1	27	5.9	0	0.0