Table 3. Tabulation of PCR results. Distribution of participants grouped in function of increasing sum of PCR positive results obtained with their sample in the 8 PCR tests that were performed and proportion of parasitologically confirmed cases in each group.

Sum PCR pos		Filter paper				GE-buffer
		INRB		ITM		INRB		ITM
	Participants	A	B	A	B	A	B	A	B	Paras
0		–	–	–	–	–	–	–	–	1 (7.7%)
1		0	7	0	1	3	8	1	1	3 (14.3%)
2	13	2	18	6	2	2	19	2	5	5 (17.9%)
3	21	3	14	9	13	7	19	5	5	7 (28.0%)
4	28	3	8	10	6	6	11	8	8	8 (53.3%)
5	25	6	14	10	10	13	15	16	11	9 (47.4%)
6	15	5	9	24	24	26	21	26	27	24 (88.9%)
7	19	19	33	34	29	35	25	35	35	33 (94.3%)
8	27	54	54	54	54	54	54	54	54	53 (98.1%)

Sum PCR pos: Sum of positive PCR tests per sample; GE-buffer: guanidine hydrochloride EDTA buffer; INRB = Institut National de Recherche Biomédicale; ITM = Institute of Tropical Medicine Antwerp; A and B = replicates A and B on the same sample; Participants: number of participants per group; Paras = parasitologically confirmed sample.