Table 1.

Sensitivity of IDEXX M. bovis antibody ELISA with sera collected from naturally infected cattle

M. bovis-infected serum type		nd	No. of herds	Sensitivity (%)
Source	ID or characterizationc			Lot 1	Lot 2	Lot 3
Great Britain	AHVLA-2a	134	31	74.6	72.4	73.1
	AHVLA-1b	50	>5	86	88	86
Ireland	No visible lesionsb	50	>5	48	44	46
	With visible lesionsb	50	>5	72	70	70
	Skin test positive, Bovigam positive, with visible lesionsb	30	22	96.7	86.7	90.0
New Zealand	AgResearchb	42	7	42.9	40.5	35.7
USA	Coloradoa	81	1	44.4	45.7	49.4
	NVSL serum banka	31	12	48.4	48.4	48.4
	Michigana	10	1	30	30	30
Overall value		478	>89	63.6	61.9	62.6

^aInfection status determined by histopathology with IS6110 PCR and/or culture.

^bInfection status determined by culture or presence of gross lesions and/or from a tuberculosis-affected herd.

^cID, identification. NVSL, National Veterinary Service Laboratory.

^dn, number of animals.