Table 5. Serum PCR performance according to combined ELISA and HA serological tests among patients with positive WB (N = 55^a).

ELISA and HA results	PCR results n(%)		pb
	Negative	Positive
Both negative tests (n = 5)	4 (80.0%)	1 (20.0%)	0.003
Discordant tests (n = 32)	10 (31.2%)	22 (68.8%)
Both positive tests (n = 18)	1 (5.6%)	17 (94.4%)

^aHA and ELISA data were simultaneously available in 55/99 WB-positive sera.

^bp-value, Chi-square test