It was a scarlet red A that the author Nathaniel Hawthorne used to ostracize characters in his novel, "The Scarlet Letter." If a character bore the infamous letter she was condemned and isolated from society as an adulteress. It seems sometimes art imitates life, although in China it is not fidelity but blood that is separating people from their communities and friends. In this case, it is hepatitis B, a disease that has infected an estimated 130 million Chinese, about 10 percent of China's total population, according to the Asian Liver Center. When friends, employers or lovers discover someone is a victim, he or she is often simply abandoned.