Table 1.

Demographic characteristics and Salmonella positive rate in Zhejiang Province from 2012 to 2021.

Variable	Cases		Hospitalizationsa		Positive rate (%)	χ2	P
	n	%	n	%
Annual distribution						0.103	<0.001
2012	69	0.61	0	0.00	1.69
2013	324	2.88	51	3.16	2.30
2014	502	4.45	100	6.20	1.46
2015	615	5.46	112	6.94	1.44
2016	1,109	9.84	159	9.85	2.54
2017	1,078	9.57	193	11.96	3.36
2018	1,296	11.50	199	12.33	4.01
2019	1,502	13.33	162	10.04	4.45
2020	2,234	19.82	289	17.91	6.80
2021	2,540	22.54	349	21.62	6.61
Area						0.065	<0.001
Hangzhou	1,306	11.59	40	2.48	2.78
Ningbo	1,181	10.48	150	9.29	3.74
Wenzhou	1,050	9.32	108	6.69	2.48
Jiaxing	788	6.99	77	4.77	3.35
Huzhou	357	3.17	94	5.82	1.68
Shaoxing	899	7.98	136	8.43	4.29
Jinhua	1,252	11.11	278	17.22	3.80
Quzhou	820	7.28	261	16.17	4.54
Zhoushan	536	4.76	85	5.27	3.57
Taizhou	1,907	16.92	157	9.73	6.57
Lishui	1,173	10.41	228	14.13	4.39
Season						0.079	<0.001
Spring	2,052	18.21	310	19.21	3.32
Summer	5,660	50.23	799	49.50	5.21
Autumn	3,094	27.46	432	26.77	3.66
Winter	463	4.11	73	4.52	0.87
Sex						6.275	0.012
Male	6,155	54.62	928	57.50	3.74
Female	5,114	45.38	686	42.50	3.57
Age (year)						0.005	<0.001
0–4	4,060	36.02	777	48.14	8.79
5–14	607	5.39	109	6.75	3.25
15–24	729	6.47	42	2.60	1.80
25–44	1,999	17.74	84	5.20	2.03
45–59	1,765	15.66	155	9.60	3.22
≥60	2,109	18.72	447	27.70	4.34
Occupation						0.007	<0.001
Farmer	3,008	26.69	435	26.95	3.44
Scattered kids	3,136	27.83	609	37.73	13.02
Worker	684	6.07	40	2.48	3.08
Student	701	6.22	77	4.77	2.39
Official staff	408	3.62	18	1.12	1.62
Unemployed	560	4.97	66	4.09	2.53
Kids in kindergarten	1,106	9.81	223	13.82	4.47
Retirees	367	3.26	73	4.52	3.01
Others	1,089	9.66	58	3.59	1.98
Unknown	210	1.86	15	0.93	2.09

^aHospitalization of cases with positive detection results.