Table 1. Comparison of seroprevalence estimates (with 95% confidence intervals) for the selected of zoonotic pathogens in humans and percentage of pigs testing seropositive in Lao PDR, according to Province (*p-values refer to the results of chi-square tests).

Pathogen	Luang Prabang Province	Savannakhet Province	p-value
	% (95% CI)	% (95% CI)
Human results
Japanese encephalitis (N = 862)	4.9% (2.9% to 7.0%)	4.7% (2.8% to 6.9%)	0.96
Hepatitis E (N = 870)	48.6% (43.9% to 53.3%)	77.7% (73.7% to 81.6%)	<0.001
Trichinella (N = 822)	59.0% (54.3% to 63.6%)	40.5% (35.6% to 45.3%)	<0.001
Taenia (N = 844)	2.3% (0.9% to 3.7%)	2.9% (1.4% to 4.6%)	0.52
Cysticercosis (N = 826)	6.1% (3.9% to 8.4%)	1.5% (0.3% to 2.8%)	<0.001
Pig results
Trichinella (N = 636)	14.4% (10.3% to 18.4%)	9.3% (6.2% to 12.4%)	0.05
Hepatitis E (N = 633)	81.3% (76.8% to 85.8%)	47.7% (42.4% to 53.0%)	<0.001
Japanese encephalitis (IgG) (N = 646)	73.0% (68.9% to 79.0%)	81.4% (76.8% to 85.8%)	0.02
Japanese encephalitis (IgM) (N = 627)	13.0% (7.8% to 18.2%)	7.1% (3.2% to 10.9%)	0.02