Table 1.

Antibody response of bovine serum samples to T. annulata as measured by IFAT and ELISA

Serum sample	Status of infection	IFAT titrea	ELISA Tams1/soluble piroplasm antigen
1	Negative	20	−
2	Infectedb	160	+
3	Infectedb	160	+
4	Immunizedc and challengedd	160	+
5	Immunizedc and challengedd	320	+
6	Immunizedc and challengedd	320	+
7	Immunizedc and challengedd	160	+
8	Immunizedc and challengedd	160	+
9	Immunizedc and challengedd	160	+
10	Immunizedc and challengedd	320	+
11	Immunizedc and challengedd	160	+
12	Immunizedc and challengedd	320	+
13	Immunizedc and challengedd	320	+

^aValues are expressed as reciprocal of end-point titre

^b2-tick equivalent GUTS

^c8 × 10⁵ macroschizonts

^d5-tick equivalent GUTS