Table 1.

Seroepidemiology and background information on Toxoplasma gondii in 2683 swine.

	Province	No. of samples	MAT titers								% (positive no.)	95% CI
			1:25	1:50	1:100	1:200	1:400	1:800	1:1600	1:3200
Location	Henan	703	7	2	0	0	1	0	0	0	1.42% (10)	0.74–2.64
	Shaanxi	1867	10	13	3	1	1	0	0	0	1.50% (28)	1.03–2.17
	Anhui	27	0	0	0	0	0	0	0	0	–	0–14.76
	Shanxi	86	0	0	0	0	0	0	0	0	–	0–5.13
	Total	2683	17	15	3	1	2	0	0	0	1.42% (38)	1.03–1.94
Sampling time	2019	265	5	2	0	0	0	0	0	0	2.64% (7)	1.18–5.46
	2020	2418	12	13	3	1	2	0	0	0	1.28 (31)	0.90–1.82
	Total	2683	17	15	3	1	2	0	0	0	1.42% (38)	1.03–1.94
Growth stages	Suckling pig	213	0	0	0	0	0	0	0	0	–	0–2.13
	Nursery pig	452	2	0	0	0	0	0	0	0	0.44% (2)	0.01–1.71
	Fattening pig	595	10	1	2	0	0	0	0	0	2.18% (13)	1.24–3.74
	Adult pig	1328	5	14	1	1	2	0	0	0	1.73% (23)	1.14–2.60
	Total	2588	17	15	3	1	2	0	0	0	1.47% (38)	1.07–2.01
Sex	Male	104	0	1	1	0	0	0	0	0	1.92% (2)	0.10–7.17
	Female	1276	7	11	0	1	1	0	0	0	1.57% (20)	1.00–2.42
	Total	1380	7	12	1	1	1	0	0	0	1.59% (22)	1.04–2.42
Pregnancy	Yes	498	2	5	0	1	0	0	0	0	1.61% (8)	0.76–3.19
	No	292	4	6	0	0	0	0	0	0	3.42% (10)	1.79–6.27
	Total	790	6	11	0	1	0	0	0	0	2.28% (18)	1.42–3.60
Health condition	Health	1821	13	15	3	1	1	0	0	0	1.81% (33)	1.29–2.54
	Unhealthy	130	0	0	0	0	0	0	0	0	0%	0–3.45
	Total	1951	13	15	3	1	1	0	0	0	1.69% (33)	1.20–2.37
Parity	Multiparous	576	3	6	0	0	1	0	0	0	1.74% (10)	0.90–3.21
	Primiparous	104	2	0	0	0	0	0	0	0	1.92% (2)	0.10–7.17
	Total	680	5	6	0	0	1	0	0	0	1.76% (12)	0.98–3.09