| hepatitis delta virus infection: a recently imported disease in new zealand. | in a study of 565 hepatitis b antigen (hbsag) positive persons from the auckland region, antibody to the hepatitis delta virus was detected in 38. the largest number were in samoans (61%) although the infection was present in some other pacific islanders. among hbsag positive healthy blood donors, antenatal patients and acute hepatitis patients between 3.8 and 4.8% were anti-delta positive; while 28% of chronic hepatitis patients were positive suggesting an association between this disease and d ... | 1987 | 3454892 |