| [study on hepatitis delta virus infection in china]. | antibody to the delta antigen (anti-delta) was detected by using elisa and ria in 1027 hbsag-positive persons distributed over 11 provinces, municipalities and autonomous regions in china. no positive of anti-delta was found in 634 cases in beijing, shanghai, guangxi, sichuan, heilongjiang, fujian, liaonin, and henan, of 393 cases in inner mongolia, xinjiang and tibet, 17 (4.3%) were positive. in these regions, the positive rate of anti-delta in cah and cph was much higher than that in chronic h ... | 1989 | 2661006 |