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. 2013 May 2;7(5):e2192. doi: 10.1371/journal.pntd.0002192

Table 2. EITB results by pig age from an endemic area of Central Peruvian Highlands.

Age in categories	EITB results		Total
	Negative (%)	Positive (%)
≤8 months	132 (49.4)	135 (50.6)^a	267
>8 months	56 (26.8)	153 (73.2)^b	209
Total	188 (39.5)	288 (60.5)	476

^a,b

Proportions were statistically different (p<0.01).