Wenyu Kang1, Zhengrong Ding1, Liping Shen2, Zhixian Zhao1, Guofei Huang1, Jie Zhang1, Qing Xiong1, Shuang Zhang3, Shuo Zhang3, Feng Wang3. 1. Center for Disease Control and Prevention of Yunnan Province, Kunming 650022, China. 2. National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China. Electronic address: slpss128@126.com. 3. National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
Abstract
OBJECTIVE: To explore the risk factors associated with immunoprophylaxis failure against mother to child transmission of hepatitis B virus (HBV) and hepatitis B vaccination status in Yunnan province, China. METHODS: Multicenter cluster sampling was used to select pregnant women who were positive for hepatitis B surface antigen (HBsAg). HBV immunoprophylaxis was carried out for the newborns. Blood samples were collected and tested for HBV markers from 7 to 10 month old infants. The factors were analyzed by univariate and logistic regression. RESULTS: A total of 2765 mothers and their infants were enrolled. The failure rate of prevention of mother to child transmission (PMTCT) was 4.12%. The rate of timely HepB1 vaccination within 24h was 98.04%, the rate of three-dose vaccination was 92.30% and the rate of hepatitis B immune globulin (HBIG) administration was 68.97%. Place of residence, maternal education, gestational age and birth weight were related to administration of HBV immunoprophylaxis. It was remarkable that the rate of HBIG administration of infants was only 63.89% with whose mothers were both HBsAg and hepatitis B e antigen (HBeAg)-positive. Further analysis showed that there were three risk factors associated with HBV immunoprophylaxis failure: mothers who were positive for HBsAg and HBeAg, maternal HBVDNA level, and HBIG administration or not. CONCLUSIONS: PMTCT of HBV was well implemented in Yunnan. However, in order to achieve optimal prevention of vertical HBV transmission, it is mandatory to make additional efforts to improve the implementation of regulatory HBV immunoprophylaxis, especially for HBsAg-positive pregnant women.
OBJECTIVE: To explore the risk factors associated with immunoprophylaxis failure against mother to child transmission of hepatitis B virus (HBV) and hepatitis B vaccination status in Yunnan province, China. METHODS: Multicenter cluster sampling was used to select pregnant women who were positive for hepatitis B surface antigen (HBsAg). HBV immunoprophylaxis was carried out for the newborns. Blood samples were collected and tested for HBV markers from 7 to 10 month old infants. The factors were analyzed by univariate and logistic regression. RESULTS: A total of 2765 mothers and their infants were enrolled. The failure rate of prevention of mother to child transmission (PMTCT) was 4.12%. The rate of timely HepB1 vaccination within 24h was 98.04%, the rate of three-dose vaccination was 92.30% and the rate of hepatitis B immune globulin (HBIG) administration was 68.97%. Place of residence, maternal education, gestational age and birth weight were related to administration of HBV immunoprophylaxis. It was remarkable that the rate of HBIG administration of infants was only 63.89% with whose mothers were both HBsAg and hepatitis B e antigen (HBeAg)-positive. Further analysis showed that there were three risk factors associated with HBV immunoprophylaxis failure: mothers who were positive for HBsAg and HBeAg, maternal HBVDNA level, and HBIG administration or not. CONCLUSIONS: PMTCT of HBV was well implemented in Yunnan. However, in order to achieve optimal prevention of vertical HBV transmission, it is mandatory to make additional efforts to improve the implementation of regulatory HBV immunoprophylaxis, especially for HBsAg-positive pregnant women.
Authors: H Li; G J Li; Q Y Chen; Z L Fang; X Y Wang; C Tan; Q L Yang; F Z Wang; F Wang; S Zhang; S L Bi; L P Shen Journal: Epidemiol Infect Date: 2017-01-09 Impact factor: 4.434