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Research Article

Table 2

Seroprevalence and risk factors for Toxoplasma gondii in swine tested by modified agglutination test.

Factor Classification standards Classification standards No. of samples Seroprevalence (%) Odds ratio (95% confidence interval) p-value
Province Shaanxi 1867 1.50% 1.005 (0.5098–2.184) 0.8850
Henan 703 1.42% 1
Growth stages Fattening pig 11–20 week 595 2.18% 9.896 (0.5853–167.3) 0.0296a,*
Adult pig >21 week 1328 1.73% 5.026 (1.128–22.39) 0.0188b,*
Nursery pig 5–10 week 452 0.44% 3.966 (0.9309–16.89) 0.0442c,*
Suckling pig 0–4 week 213 0% 1
Sex Male 104 1.92% 1.231 (0.2837–5.344) 0.7807
Female 1276 1.57% 1
Pregnancy No Replacement gilt, waiting for breeding 292 3.42% 2.172 (0.8473–5.568) 0.0983
Yes 498 1.61% 1
Health condition Health 1821 1.81% 4.889 (0.2977–80.29) 0.1216
Unhealthy Illness, loss of appetite, miscarriage 130 0% 1
Parity Primiparous 104 1.92% 1.110 (0.2396–5.141) 0.8940
Multiparous 576 1.74% 1
Sampling time 2015–2017 2798d 9.94% 7.679 (5.447–10.83) <0.0001*
2019–2020 This study 2683 1.42% 1

Note: *Statistically significant (p < 0.05).

a

Fattening pigs versus suckling pigs.

b

Fattening pigs versus nursery pigs.

c

Nursery pigs versus adult pigs.

d

Data were obtained from Su et al. [16].

These samples were collected from central China and detected by MAT.

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