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Outcomes of the national programme on prevention of mother-to-child transmission of hepatitis B virus in China, 2016–2017
Infectious Diseases of Poverty ( IF 8.1 ) Pub Date : 2019-08-05 , DOI: 10.1186/s40249-019-0576-y Ya-Ping Qiao 1 , Min Su 1 , Yao Song 2 , Xiao-Yan Wang 1 , Zhen Li 1 , Yan-Lin Li 3 , Li-Xia Dou 1 , Qian Wang 1 , Katrina Hann 4 , Guo-Min Zhang 5 , Xiao-Na Huang 6 , Yu-Ning Yang 6 , Xi Jin 1 , Ai-Ling Wang 1
Infectious Diseases of Poverty ( IF 8.1 ) Pub Date : 2019-08-05 , DOI: 10.1186/s40249-019-0576-y Ya-Ping Qiao 1 , Min Su 1 , Yao Song 2 , Xiao-Yan Wang 1 , Zhen Li 1 , Yan-Lin Li 3 , Li-Xia Dou 1 , Qian Wang 1 , Katrina Hann 4 , Guo-Min Zhang 5 , Xiao-Na Huang 6 , Yu-Ning Yang 6 , Xi Jin 1 , Ai-Ling Wang 1
Affiliation
In addition to providing free hepatitis B vaccine (HBvacc) series to all infants in China since 2005, the national programme on prevention of mother-to-child transmission (PMTCT) of hepatitis B virus (HBV) started providing free hepatitis B immunoglobulin for all new-borns born to hepatitis B surface-antigen (HBsAg) positive mothers in 2010. However, few studies have evaluated the effectiveness of the PMTCT programme. Therefore, we aimed to investigate the outcomes of the programme and identify associated factors. Using a cross-sectional study design, we collected data on 4112 pairs of HBsAg-positive mothers and their children aged 7–22 months in four representative provinces through interviews and medical record review. We tested HBsAg and hepatitis B surface antibody (anti-HBs) of children by enzyme-linked immunosorbent assay at designated maternal and child hospital laboratories. We used logistic regression to analyse factors associated with child HBsAg and anti-HBs positivity. Thirty-five children were HBsAg positive, indicating the mother-to-child transmission (MTCT) rate was 0.9% (0.6–1.1%). The anti-HBs positive rate was 96.8% (96.3-97.4%). Children receiving HBvacc between 12 and 24 h of birth were 2.9 times more likely to be infected than those vaccinated in less than 12 h (adjusted odds ratio [aOR] = 2.9, 95% confidence interval [CI]: 1.4–6.3, P = 0.01). Maternal hepatitis B e-antigen (HBeAg) positivity was associated with higher MTCT rate (aOR = 79.1, 95% CI: 10.8–580.2, P < 0.001) and lower anti-HBs positive rate (aOR = 0.4, 95% CI: 0.3–0.6, P < 0.001). Children with low birth weight (LBW) were 60% less likely to be anti-HBs positive than those with normal birth weight (aOR = 0.4, 95% CI: 0.2–0.8, P = 0.01). The MTCT rate was lower than the 2030 WHO elimination goal, which implies the programme is on track to achieve this target. As earlier HBvacc birth dose (HBvcc-BD) was associated with lower MTCT rate, we suggest that the PMTCT programme work with the Expanded Programme on Immunization (EPI) to modify the current recommendation for early HBvcc-BD to a requirement. Our finding that LBW was associated with lower anti-HBs positivity points to the need for further studies to understand factors associated with these risks and opportunities for program strengthening. The programme needs to ensure providing essential test to identify HBeAg-positive mothers and their infants and provide them with appropriate medical care and follow-up.
更新日期：2019-08-05
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