Table 1.

Prevalence of hemoplasma species in commercial pig farms of Korea from 2014 to 2018

Group		No. tested	Mycoplasma suis			Mycoplasma parvum			Novel hemotropic Mycoplasma haemosuis
			No. positive (%)	95% CI	Chi-square test	No. positive (%)	95% CI	Chi-square test	No. positive (%)	95% CI	Chi-square test
Breed	Breeding pigs	720	2 (0.3)	0–0.7	χ2(1) = 1.002, P = 0.3169	21 (2.9)	1.7–4.2	χ2(1) = 0.1510, P = 0.6976	1 (0.1)	0–0.4	χ2(1) = 1.594, P = 0.2068
	Fattening pigs	1147	1 (0.1)	0–0.3		30 (2.6)	1.7–3.5		0	0
Region	Northern	591	1 (0.2)	0–0.5	χ2(3) = 0.8050, P = 0.8483	6 (1.0)	0.2–1.8	χ2(3) = 19.432, P = 0.0002	0	0	χ2(3) = 1.064, P = 0.7859
	Central	306	0	0		3 (1.0)	0–2.1		0	0
	Southern	905	2 (0.2)	0–0.5		39 (4.3)	3.0–5.6		1 (0.1)	0–0.3
	Jeju Island	65	0	0		3 (4.6)	0–9.7		0	0
Total		1867	3 (0.2)	0–0.3		51 (2.7)	2.0–3.5		1 (0.1)	0–0.2

Abbreviations: 95% CI, 95% confidence interval

Note: Significant P-value (P < 0.05) is indicated in bold