Journal
HUMAN VACCINES & IMMUNOTHERAPEUTICS
Volume 17, Issue 5, Pages 1530-1535Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/21645515.2020.1814096
Keywords
Hepatitis B virus; vaccine; immunization; immune effect; vaccination
Categories
Funding
- National Scientific and Technological Major Project of China [2018ZX10715014, 2017ZX10105001, 2013ZX10004-904, 2014ZX10004008]
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In insular regions of southeast China, the prevalence of hepatitis B can be significantly reduced through large-scale adult HB vaccination. However, there is still a high proportion of susceptible individuals to the HBV virus, so additional measures need to be taken by the government to limit the spread of HBV.
Prevalence of hepatitis B (HB) remains high among adults in insular regions of southeast China. To address this issue, large-scale HB vaccination was implemented in Putuo County of Zhoushan City in 2013. To examine the effects of this large-scale HB vaccination, a cross-sectional serological survey was conducted on two isolated islands, Putuo (intervention group) and Dinghai (control group) Counties of Zhoushan City in southeastern China five years later. The data showed lower prevalence of HBsAg and negative results for all HBV markers in the intervention group compared to the control group (4.2% and 6.0%, 20.8% and 33.0%), while the positive rate for anti-HBs and only anti-HBs were higher (68.4% and 53.4%, 47.9% and 34.3%). Therefore, large-scale adult HB vaccination could lower the HB epidemic level. However, the proportion of susceptible people who were negative for all HBV markers remained high. Hence, several additional measures to limit the spread of HBV should be taken by the government.
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