TABLE 2.

IgG antibody responses in serum samples from index herd in relation to skin test status

Blood sample datea and skin test status (no. of samples)	% Antibody positiveb						Total % positivec
	MPB70 peptide	PPD-B	MPB70	MPB83	CFP10	ESAT6
18 March 2014
SICTT positive (14)	100	100	100	100	100	78.6	100
SICTT negative (433)	78.1	81.1	71.4d	62.8e	45.0f	9.0f	77.8d
Total (447)	78.7	81.7	72.3	64.0	46.8	11.2	78.5
22 May 2014
SIT positive (74)	41.9	63.5	55.4	54.1	43.2	37.8	64.9
SIT negative (133)	27.8d	31.6f	36.1d	30.8d	17.3f	24.8	42.1e
Total (207)	32.9	43.0	43.0	39.1	26.6	29.5	50.2

^aSICTT was performed in March and blood samples were taken 8 days after PPD-B injection, while SIT was performed in May and blood samples were taken 3 days after PPD-B injection.

^bValues showing statistically significant differences between skin test-positive and -negative animals are in bold.

^cPositive, antibodies to two or more antigens.

^dP < 0.05.

^eP < 0.001.

^fP < 0.0001.