[Latent HBV infection in single blood donors].

A total of 14,366 one-time blood donors were examined; 984 (6.8%) donors of them were found to have anti-HBc. All anti-HBc-positive samples were tested for HBsAg, IgM anti-HBc, HBeAg, anti-HBe, and specific DNA-HBV by polymerase chain reaction (sensitivity 400 coplml or higher).