A new ELISA kit which uses a combination of Plasmodium falciparum extract and recombinant Plasmodium vivax antigens as an alternative to IFAT for detection of malaria antibodies

Table 3 ELISA and IFAT results for first-time travellers (A) and frequent travellers or malaria area residents (B)

A		ELISA malaria antibody Test
		Positive	Equivocal	Negative	Total
IFAT	Positive	20	1	0	21
	Equivocal	1	0	1	2
	Negative	3	0	6	9
	*Total*	24	1	7	32
IFAT and ELISA clinical sensitivities are respectively 65.6% (21/32) (CI: 45.3 – 85.9%) and 75% (24/32) (CI: 57.7 – 92.3%), equivocal results considered as negative for calculation.
B		ELISA malaria antibody test
		Positive	Equivocal	Negative	*Total*
IFAT	Positive	37	2	0	39
	Equivocal	2	0	2	4
	Negative	1	0	0	1
	*Total*	40	2	2	44
IFAT and ELISA clinical sensitivities are respectively 88.6% (39/44) (CI: 78.7 – 98.6%) and 90.9% (40/44) (CI/82 – 99.8%), equivocal results considered as negative for calculation.