Evaluation on efficacy of plasma-derived hepatitis B vaccine and persistence of protective level after vaccination

Wang, S.; Wu, C.; Li, Y.

Zhonghua Liu Xing Bing Xue Za Zhi 15(3): 154-157

1994


ISSN/ISBN: 0254-6450
PMID: 7834691
Document Number: 431864
From October 1990 to May 1993, 300 students aged 18 to 20 years in Xian were studied to evaluate the efficacy of plasma-derived hepatitis B vaccine made in five factories. AntiHBs titer in 5 vaccinated groups reach the highest at the twelfth month after the first injection and decreased afterwards. The positive rate of anti-HBs decreased slowly, but the titer of anti-HBs fell sharply. Compared with the control group, the differences were all significant. The results showed that the efficacies of hepatitis B vaccine made in five factories were similar. The protection rate of hepatitis B vaccine against HBV infection was 79.22%.

Document emailed within 1 workday
Secure & encrypted payments