KRT88P and syphilis: Mixed infections were detected in 14 sera: anti-HBc + syphilis (n = 4), anti-HBc + HBsAg (n = 2), anti-HBc + HBV (n = 2), HBsAg + HBV (n = 1), HTLV-1/2 + syphilis (n = 1), anti-HBc + HTLV-1/2 (n = 1), HIV-1/2 + syphilis (n = 1), HCV + syphilis (n = 1), and HTLV-1/2 + syphilis (n = 1).