TABLE 4.

Comparison of IgG antibody responses in paired serum and milk samples in relation to skin test status in March 2014

Samplea and skin test status (no. of samples)	% Antibody positiveb						Total % positivec
	MPB70 peptide	PPD-B	MPB70	MPB83	CFP10	ESAT6
Serum
SICTT positive (12)	100	100	100	100	100	75.0	100
SICTT negative (263)	90.9	95.1	89.7	80.2	55.5d	10.7e	95.4
Total (275)	91.3	95.3	90.2	81.1	57.5	14.2	95.6
Milk
SICTT positive (12)	100	100	100	100	100	83.3	100
SICTT negative (263)	93.2	93.9	92.0	89.0	75.7d	16.0e	95.1
Total (275)	93.5	94.2	92.4	89.5	76.7	18.9	95.3

^aPaired serum and milk samples were taken on 18 March 2014.

^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 < 0.0001.