TABLE 1.

Consensus classifications of sera from four regions of Brazil by in-house ELISAs and IFAs

Source of sera	No. of sera col- lected	No. of sera classified as:
		Positive by both assays	Negative by both assays	Positive or neg- ative	Discrepant (assay results differed)
Minas Gerais	261	180	81	261	0
Paraíba	466	135	305	440	26
Piauí	253	202	44	246	7
Amazon	85	3	75	78	7
Total	1,065	520	505	1,025	40