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Timing of the First Dose of the Hepatitis B Vaccine in Preterm Infants. Vaccines (Basel) 2022; 10:vaccines10101656. [PMID: 36298521 PMCID: PMC9610103 DOI: 10.3390/vaccines10101656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 09/26/2022] [Accepted: 09/28/2022] [Indexed: 11/09/2022] Open
Abstract
Introduction: The World Health Organization (WHO) recommends all newborn infants receive the first dose of the hepatitis B vaccine within 24 h of birth irrespective of maternal hepatitis B carrier status. However, the physiological immaturity of the immune system in preterm infants may influence the immune responses to the vaccine particularly in the first few days and weeks of life, and adverse events may occur following vaccination that are not observed in infants born at term. Objectives: To review existing published guidelines surrounding timing of the first dose of the hepatitis B vaccine in preterm infants born to hepatitis B surface antigen negative (HBsAg-negative) mothers. Methods: A search was performed for relevant papers and guidelines published between January 2002 and July 2022 on the Ovid MEDLINE and Embase databases and through targeted searches. Two authors independently reviewed the search results to identify relevant sources, which were then analysed and described through narrative synthesis. Results: Twenty-seven relevant papers and guidelines regarding 15 countries and regions were included. Of these, 13.3% of guidelines, which represented 16.8% of the overall population of 4.1 billion people covered by the identified guidelines, recommended a nationwide birth dose of the hepatitis B vaccine to all preterm infants. In 40.0% of guidelines (77.9% of the overall population), the birth dose was only recommended for infants with a birth weight of more than 2000–2200 g. Another 33.3% of countries and regions (covering 4.4% of the population) recommended no universal birth dose for all infants, including preterm infants, whilst 13.3% (1.0% of the population) had guidelines that varied between jurisdictions and hospitals within their country/region. Conclusions: Existing guidelines surrounding the timing of the first dose of the hepatitis B vaccine in preterm infants vary substantially between countries and regions. Further research comparing the immunogenicity and safety of different hepatitis B vaccine schedules is needed to provide concrete evidence to provide guidance regarding the timing of vaccination against hepatitis B in preterm infants.
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Immunogenicity of Hepatitis B Vaccine in Preterm or Low Birth Weight Infants: A Meta-Analysis. Am J Prev Med 2020; 59:278-287. [PMID: 32564973 DOI: 10.1016/j.amepre.2020.03.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 03/09/2020] [Accepted: 03/23/2020] [Indexed: 12/23/2022]
Abstract
CONTEXT The study aims to quantitatively assess the immune response to hepatitis B vaccine in infants born preterm or with low birth weight. EVIDENCE ACQUISITION In December 2018, a literature search was conducted in 4 databases without date restrictions. The pooled ORs, mean differences, and their corresponding 95% CIs were calculated with random-effects models using the DerSimonian-Laird estimator. The potential risk of bias of each study was assessed using the Newcastle-Ottawa Scale. The stability and publication bias of the pooled estimates were also evaluated. Analyses were completed in 2019. EVIDENCE SYNTHESIS A total of 27 studies including 22,202 infants were eligible for analysis. The studies found that infants born preterm had significantly poorer immune responses to the hepatitis B vaccine. Preterm infants were 1.36 times more likely to exhibit nonresponse to the hepatitis B vaccine (95% CI=1.12, 1.65, p=0.002) compared with their full-term counterparts. The pooled estimates for preterm birth may be subject to a potential publication bias. However, these results were stable, as suggested by the leave-one-out analysis and fail-safe number. The association between low birth weight and impaired immune response to the hepatitis B vaccine was not statistically significant when birth weight was dichotomized at 2,500 g. CONCLUSIONS These findings suggest an association between preterm birth and lowered immune responses to hepatitis B vaccine.
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Nagano N, Kitajima H, Morioka I. Japanese original delayed hepatitis B vaccination provides adequate immunogenicity against mother-to-child hepatitis B virus infection in preterm infants: A nationwide survey in Japan. J Infect Chemother 2019; 26:385-388. [PMID: 31839560 DOI: 10.1016/j.jiac.2019.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 10/24/2019] [Accepted: 11/16/2019] [Indexed: 11/29/2022]
Abstract
OBJECTIVE We aimed to evaluate immunogenicity following Japanese original delayed hepatitis B (HB) vaccinations for prevention of mother-to-child HB infection in preterm infants. METHODS A nationwide survey in Japan was conducted at certified neonatology facilities in 2014. Eighty-four preterm infants born from a serum hepatitis B surface (HBs) antigen-positive mother were included. We collected data on the following parameters: gestational age, birth weight (BW), age at HB vaccination, age at examination of serum anti-HBs titer, and serum anti-HBs titer. The delayed HB vaccination schedule was 3 doses of HB vaccines at 2, 3 and 5 months of age. A seropositive immunogenic response to HB vaccination was defined as an anti-HBs titer ≥10 mIU/mL. Seropositive rates were calculated in all participants. Four subgroups based on BW were as follows: <1000 g (n = 13), 1000-1499 g (n = 16), 1500-1999 g (n = 26), and ≥2000 g (n = 29). RESULTS Among 84 preterm infants who completed the delayed vaccination schedule, 82 (98%) achieved seropositive anti-HBs titer at a median age of 6 months. Seropositive rates of infants <1000 g, 1000-1499 g, 1500-1999 g, and ≥2000 g were 92%, 94%, 100%, and 100%, respectively. CONCLUSION The Japanese original delayed HB vaccinations achieved sufficient seropositive rates in preterm infants and provide immunogenicity against mother-to-child HB infection.
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Affiliation(s)
- Nobuhiko Nagano
- Department of Pediatrics and Child Health, Nihon University School of Medicine, 30-1, Oyaguchi Kami-machi, Itabashi-ku, Tokyo, 1738610, Japan
| | - Hiroyuki Kitajima
- Department of Neonatology, Osaka Women's and Children's Hospital, 840 Murodo-Cho, Izumi, Osaka, 5941101, Japan
| | - Ichiro Morioka
- Department of Pediatrics and Child Health, Nihon University School of Medicine, 30-1, Oyaguchi Kami-machi, Itabashi-ku, Tokyo, 1738610, Japan.
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Bednarek A, Bartkowiak-Emeryk M, Klepacz R, Ślusarska B, Zarzycka D, Emeryk A. Persistence of Vaccine-Induced Immunity in Preschool Children: Effect of Gestational Age. Med Sci Monit 2018; 24:5110-5117. [PMID: 30033997 PMCID: PMC6067032 DOI: 10.12659/msm.908834] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background A program of immunization that ensures optimal development of acquired immunity should be carried out in all healthy newborns. The aim of the present study was to verify, at 2.5–3 years after the last dose of basic vaccination, if preschool children who have been delivered preterm and at term differ in their levels of post-vaccination protective antibodies. Material/Methods Humoral response was assessed in 352 children (mean age: 5.22±0.34 years) who received a series of obligatory vaccinations in the period from birth to 2.5–3 years of age. Antibodies (in IgG class) against vaccine antigens – diphtheria (D), tetanus (T), pertussis (P), Haemophilus influenzae type b (Hib), poliomyelitis (IPV), measles, mumps, and rubella (MMR) – were measured using ELISA. The level of antibodies against hepatitis B (HBV) was assessed by chemiluminescence. Results All children had been immunized according to the Polish National Vaccination Program. The group of 352 children eligible for the study included 46 (13.1%) preschoolers delivered preterm (32–36 weeks of gestation), and 306 (86.9%) born at term (37–42 weeks of gestation). All children maintained seroprotective antibody levels against polioviruses type 1, 2, and 3 (>12 mIU/mL), and against measles antigens (>300 U/mL). No statistically significant differences were found in the proportions of preschoolers born preterm and at term who were seroprotected against other vaccine antigens. Conclusions Among preschool children who were immunized according to chronological age, those we were born late preterm do not seem to differ in vaccine-induced immunity from those who were born full-term.
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Affiliation(s)
- Anna Bednarek
- Department of Pediatric Nursing, Medical University of Lublin, Lublin, Poland
| | | | - Robert Klepacz
- Department of Clinical Pathomorphology, Medical University of Lublin, Lublin, Poland
| | - Barbara Ślusarska
- Department of Community Nursing, Medical University of Lublin, Lublin, Poland
| | - Danuta Zarzycka
- Department of Pediatric Nursing, Faculty of Health Sciences, Medical University of Lublin, Lublin, Poland
| | - Andrzej Emeryk
- Department of Pulmonary Diseases and Children Rheumatology, Medical University of Lublin, Lublin, Poland
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Tan CXT, Chan SM, Lee LY, Ong C, Phua KB, Aw MM, Saw S, Lee GH, Wong F, Thoon KC. Serologic Responses After Hepatitis B Vaccination in Preterm Infants Born to Hepatitis B Surface Antigen-Positive Mothers: Singapore Experience. Pediatr Infect Dis J 2017; 36:e208-e210. [PMID: 28198787 DOI: 10.1097/inf.0000000000001578] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND The Advisory Committee on Immunization Practices (ACIP) recommends a 4-dose vaccination schedule for preterm low birth weight infants (<2 kg) and a 3-dose vaccination schedule for preterm infants (≥2 kg) born to hepatitis B surface antigen (HBsAg)-positive mothers. However, data remain limited for these high-risk infants, and the optimal dosing schedule in Asia is not well established. AIM The aim of this study was to evaluate the serologic vaccine responses in preterm infants born to HBsAg-positive mothers using current vaccination guidelines. METHODS Preterm babies of gestation less than 37 completed weeks born to HBsAg-positive mothers were prospectively recruited during 6 years (June 2009 to December 2015) and retrospectively recruited via convenience sampling in 2 years (June 2013 to April 2015) in 2 tertiary pediatric centers. The preterm infants were given 4 or 3 vaccine doses as per ACIP 2005 guidelines. Vaccine response was defined as achieving hepatitis B surface antibody values of >10 IU/L [Abbott Architect (Abbott Laboratories, Chicago, IL)] at 9 months of chronologic age. RESULTS A total of 24 preterm infants were recruited. Four had a birth weight <2 kg. Of 23 surviving infants, all were negative for HBsAg. One baby (4.5%) did not achieve adequate vaccine response. All 4 infants with birth weight <2 kg achieved seroprotective values. CONCLUSION The current ACIP-recommended vaccination schedule results in adequate antibody responses in preterm infants of HBsAg-positive mothers.
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Affiliation(s)
- Christelle Xian-Ting Tan
- From the *Khoo Teck Puat-National University Children's Medical Institute, National University Health System, Singapore; †Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; ‡Department of Neonatology, National University Health System, Singapore; §Department of Paediatrics, KK Women's and Children's Hospital, Singapore; ¶Laboratory Medicine, and ‖Department of Gastroenterology and Hepatology, National University Health System, Singapore; and **National Healthcare Group Polyclinics, Singapore
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Wen WH, Huang CW, Chie WC, Yeung CY, Zhao LL, Lin WT, Wu JF, Ni YH, Hsu HY, Chang MH, Lin LH, Chen HL. Quantitative maternal hepatitis B surface antigen predicts maternally transmitted hepatitis B virus infection. Hepatology 2016; 64:1451-1461. [PMID: 27044007 DOI: 10.1002/hep.28589] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 03/23/2016] [Accepted: 03/27/2016] [Indexed: 12/20/2022]
Abstract
UNLABELLED Despite immunoprophylaxis, hepatitis B virus (HBV) transmission in highly viremic mothers remains a global health issue. Using quantitative maternal surface antigen (HBsAg) to predict HBV infection in infants has not been investigated. We enrolled 526 mother-infant pairs with positive maternal HBsAg under current immunoprophylaxis. Maternal viral load and quantitative HBsAg were measured in the peripartum period. Infant HBsAg seropositivity for more than 6 months was defined as chronic infection. Rates of chronic infection in infants at various maternal HBsAg levels were estimated using a multivariate logistic regression model. Results showed that maternal HBsAg was positively correlated with maternal viral load (r = 0.69; P < 0.001) and accurately predicted maternal viral load above 6, 7, and 8 log10 IU/mL with an area under the receiver operating characteristic curve (AUC) of 0.97, 0.98, and 0.95. Nineteen infants were chronically infected. After adjustment for the other risk factor, maternal HBsAg level was significantly associated with risk of infection (adjusted odds ratio for each log10 IU/mL increase, 15.02; 95% confidence interval [CI], 3.89-57.94; P < 0.001). The AUC for predicting infection by quantitative maternal HBsAg was comparable to that by maternal viral load (0.89 vs. 0.87; P = 0.459). Estimated rates of infection at maternal HBsAg levels of 4, 4.5, and 5 log10 IU/mL were 2.4% (95% CI, 0.1-4.6; P = 0.04), 8.6% (95% CI, 4.5-12.7; P < 0.001), and 26.4% (95% CI, 12.6-40.2; P < 0.001). CONCLUSION Quantitative maternal HBsAg predicts infection in infants as well as maternal viral load does. Antiviral therapy may be considered in pregnant women with an HBsAg level above 4-4.5 log10 IU/mL to interrupt mother-to-infant transmission. (Hepatology 2016;64:1451-1461).
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Affiliation(s)
- Wan-Hsin Wen
- Department of Pediatrics, Cardinal Tien Hospital, New Taipei City, Taiwan.,School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei City, Taiwan
| | - Chi-Wen Huang
- Department of Pediatrics, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan.,Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Wei-Chu Chie
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Chun-Yan Yeung
- Department of Pediatrics, Mackay Memorial Hospital, Taipei, Taiwan
| | - Lu-Lu Zhao
- Department of Pediatrics, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Wen-Terng Lin
- Department of Pediatrics, En Chu Kong Hospital, New Taipei City, Taiwan
| | - Jia-Feng Wu
- Department of Pediatrics, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yen-Hsuan Ni
- Department of Pediatrics, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hong-Yuan Hsu
- Department of Pediatrics, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Medical Education and Bioethics, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Mei-Hwei Chang
- Department of Pediatrics, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Lung-Huang Lin
- School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei City, Taiwan. .,Department of Pediatrics, Cathay General Hospital, Taipei, Taiwan.
| | - Huey-Ling Chen
- Department of Pediatrics, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan. .,Department of Medical Education and Bioethics, College of Medicine, National Taiwan University, Taipei, Taiwan.
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Ni YH, Chang MH, Jan CF, Hsu HY, Chen HL, Wu JF, Chen DS. Continuing Decrease in Hepatitis B Virus Infection 30 Years After Initiation of Infant Vaccination Program in Taiwan. Clin Gastroenterol Hepatol 2016; 14:1324-30. [PMID: 27155556 DOI: 10.1016/j.cgh.2016.04.030] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 04/08/2016] [Accepted: 04/15/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Taiwan began a universal hepatitis B virus (HBV) vaccination program for infants in July 1984. The seroprevalence of hepatitis B surface antigen (HBsAg) decreased from 9.8% before the vaccination program to less than 1% by 25 years afterward. We continued to monitor HBV infections in this population. METHODS We conducted a series of serologic and epidemiologic surveys in the Taipei metropolitan area every 5 years from 1984 through 2014. From January 1 through December 31 of 2014, we collected serum samples from 4605 apparently healthy individuals (ages: 287 were <3 y, 405 were 3-6 y, 675 were 7-12 y, 686 were 13-18 y, 468 were 18-22 y, and 2084 were 22-50 y). All subjects were tested for HBsAg, its antibody (anti-HBs), and hepatitis B core antibody (anti-HBc). We performed genotype and viral load analyses for patients who tested positive for anti-HBc. RESULTS Of vaccinated participants (age, <30 y; n = 3299), 0.5% tested positive for HBsAg, 47.4% tested positive for anti-HBs, and 4.5% tested positive for anti-HBc. Of unvaccinated participants (age, 30-50 y, n = 1306), 6.7% tested positive for HBsAg (P < .0001), 69.4% tested positive for anti-HBs, and 44.1% tested positive for anti-HBc. One occult HBV infection was found in each age group. Among subjects positive for HBsAg younger than age 30, 77% were born to mothers positive for HBsAg. CONCLUSIONS Based on a series of serologic and epidemiologic surveys performed in the Taipei metropolitan area, 6.7% of persons born before the universal HBV vaccination program were positive for HBsAg, compared with 0.5% of those born afterward. Most subjects positive for HBsAg younger than age 30 were born to mothers positive for HBsAg.
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Affiliation(s)
- Yen-Hsuan Ni
- Department of Pediatrics, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan; Hepatitis Research Center, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan.
| | - Mei-Hwei Chang
- Department of Pediatrics, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan; Hepatitis Research Center, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chyi-Feng Jan
- Department of Family Medicine, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hong-Yuan Hsu
- Department of Pediatrics, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Huey-Ling Chen
- Department of Pediatrics, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Jia-Feng Wu
- Department of Pediatrics, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ding-Shinn Chen
- Hepatitis Research Center, Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan; Genomics Research Center, Academica Sinica, Taipei, Taiwan
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Abstract
Objective Recommendations for immunoprophylaxis in low-birth-weight (LBW) infants born to hepatitis B surface antigen (HBsAg)-positive mothers vary. We successfully immunized an HBsAg-exposed infant (birth weight: 400 g) and performed a literature review on the outcome of postexposure immunoprophylaxis in HBsAg-exposed preterm and LBW infants. Methods By use of PubMed we identified articles relevant to the topic. Studies were included if the intended vaccine schedule was completed and follow-up data were reported. Results Antibody response was reported in 31 LBW infants (birth weight < 2,500 g) and 49 infants with gestational age of < 38 weeks. Low anti-HBs antibody levels (< 100 IU/L) were found in 9 (29%) of the 31 LBW infants. Overall, 2 of 20 (10%) preterm infants and 2 of 17 (12%) LBW were HBsAg-positive on follow-up. In one study, none of the 26 exposed very LBW infants became infected. Conclusion Due to heterogeneity in immunization schedules, lack of information on transmission rates, and the small number of included subjects, no firm conclusions can be drawn regarding the optimal postexposure prophylaxis in LBW infants. We propose that active and passive immunization at birth should be completed by three further active doses (0-1-2-12 month schedule) until further prospective studies are available.
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Affiliation(s)
- Markus Waitz
- Division of Neonatology and Pediatric Intensive Care Medicine, Department of Pediatrics, University of Ulm, Germany
| | - Reinhard Hopfner
- Division of Neonatology and Pediatric Intensive Care Medicine, Department of Pediatrics, University of Ulm, Germany
| | - Helmut D Hummler
- Division of Neonatology and Pediatric Intensive Care Medicine, Department of Pediatrics, University of Ulm, Germany
| | - U Heininger
- Department of Pediatric Infectious Diseases and Vaccinology, University Children's Hospital Basel, University of Basel, Switzerland
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