1
|
Gbaguidi MLE, Adamou R, Edslev S, Hansen A, Domingo ND, Dechavanne C, Massougbodji A, Garcia A, Theisen M, Milet J, Donadi EA, Courtin D. IgG and IgM responses to the Plasmodium falciparum asexual stage antigens reflect respectively protection against malaria during pregnancy and infanthood. Malar J 2024; 23:154. [PMID: 38764069 PMCID: PMC11103834 DOI: 10.1186/s12936-024-04970-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 04/29/2024] [Indexed: 05/21/2024] Open
Abstract
BACKGROUND Plasmodium falciparum malaria is a public health issue mostly seen in tropical countries. Until now, there is no effective malaria vaccine against antigens specific to the blood-stage of P. falciparum infection. Because the pathogenesis of malarial disease results from blood-stage infection, it is essential to identify the most promising blood-stage vaccine candidate antigens under natural exposure to malaria infection. METHODS A cohort of 400 pregnant women and their infants was implemented in South Benin. An active and passive protocol of malaria surveillance was established during pregnancy and infancy to precisely ascertain malaria infections during the follow-up. Twenty-eight antibody (Ab) responses specific to seven malaria candidate vaccine antigens were repeatedly quantified during pregnancy (3 time points) and infancy (6 time points) in order to study the Ab kinetics and their protective role. Abs were quantified by ELISA and logistic, linear and cox-proportional hazard model were performed to analyse the associations between Ab responses and protection against malaria in mothers and infants, taking into account socio-economic factors and for infants an environmental risk of exposure. RESULTS The levels of IgM against MSP1, MSP2 and MSP3 showed an early protective response against the onset of symptomatic malaria infections starting from the 18th month of life, whereas no association was found for IgG responses during infancy. In women, some IgG responses tend to be associated with a protection against malaria risk along pregnancy and at delivery, among them IgG3 against GLURP-R0 and IgG2 against MSP1. CONCLUSION The main finding suggests that IgM should be considered in vaccine designs during infanthood. Investigation of the functional role played by IgM in malaria protection needs further attention.
Collapse
Affiliation(s)
- Mahugnon L Erasme Gbaguidi
- Division of Clinical Immunology, Department of Medicine, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
- IRD, MERIT, Université Paris Cité, 75006, Paris, France
- Centre d'Etude Et de Recherche Sur Les Pathologies Associées À La Grossesse Et À L'Enfance, Cotonou, Bénin
| | - Rafiou Adamou
- IRD, MERIT, Université Paris Cité, 75006, Paris, France
- Centre d'Etude Et de Recherche Sur Les Pathologies Associées À La Grossesse Et À L'Enfance, Cotonou, Bénin
| | - Sofie Edslev
- Institut de Recherche Clinique du Bénin, Abomey-Calavi, Benin
| | - Anita Hansen
- Institut de Recherche Clinique du Bénin, Abomey-Calavi, Benin
| | - Nadia D Domingo
- Centre d'Etude Et de Recherche Sur Les Pathologies Associées À La Grossesse Et À L'Enfance, Cotonou, Bénin
| | | | | | - André Garcia
- IRD, MERIT, Université Paris Cité, 75006, Paris, France
| | - Michael Theisen
- Centre for Medical Parasitology at Department of International Health, Immunology and Microbiology, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark
- Department of Infectious Diseases, Copenhagen University Hospital, Copenhagen, Denmark
- Department for Congenital Disorders, Statens Serum Institut, Copenhagen, Denmark
| | | | - Eduardo A Donadi
- Division of Clinical Immunology, Department of Medicine, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - David Courtin
- IRD, MERIT, Université Paris Cité, 75006, Paris, France.
| |
Collapse
|
2
|
Karampatsas K, Hall T, Voysey M, Carreras-Abad C, Cochet M, Ramkhelawon L, Peregrine E, Andrews N, Heath PT, Le Doare K. Antibody kinetics between birth and three months of life in healthy infants with natural exposure to Group B streptococcus: A UK cohort study. Vaccine 2024; 42:3230-3238. [PMID: 38627147 DOI: 10.1016/j.vaccine.2024.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 03/11/2024] [Accepted: 04/04/2024] [Indexed: 04/29/2024]
Abstract
INTRODUCTION Capsular polysaccharide (CPS) serotype-specific Immunoglobulin G (IgG) in cord blood has been proposed as a correlate of protection against invasive Group B Streptococcus (iGBS) disease. Although protective levels are required in infants throughout the window of vulnerability up to 3 months of age, little is known regarding the kinetics of GBS-specific IgG over this period. METHODS We enrolled 33 healthy infants born to mothers colonized with GBS. We collected cord blood and infant blood samples either at one (21-35 days), two (49-63 days), or three months of age (77-91 days). We measured GBS serotype-specific CPS IgG concentrations and calculated the decay rate using a mixed-effects model. We further explored whether the antibody kinetics were affected by common maternal and infant factors and estimated the correlation between IgG concentration at birth and one, two, and three months of age. RESULTS The half-life estimate of IgG concentration for homologous and non-homologous GBS serotypes in paired samples with detectable IgG levels at both time points was 27.4 (95 % CI: 23.5-32.9) days. The decay rate did not vary by maternal age (p = 0.7), ethnicity (p = 0.1), gravida (p = 0.1), gestation (p = 0.7), and infant sex (p = 0.1). Predicted IgG titres above the assay lower limit of quantification on day 30 strongly correlated with titres at birth (Spearman correlation coefficient 0.71 [95 % CI: 0.60-0.80]). CONCLUSION Our results provide a basis for future investigations into the use of antibody kinetics in defining a serocorrelate of protection against late-onset iGBS disease.
Collapse
Affiliation(s)
- Konstantinos Karampatsas
- Centre for Neonatal and Paediatric Infection, St. George's, University of London, London, United Kingdom.
| | - Tom Hall
- Centre for Neonatal and Paediatric Infection, St. George's, University of London, London, United Kingdom
| | - Merryn Voysey
- Oxford Vaccine Group, Department of Paediatrics, University of Oxford, Oxford, United Kingdom
| | - Clara Carreras-Abad
- Centre for Neonatal and Paediatric Infection, St. George's, University of London, London, United Kingdom
| | - Madeleine Cochet
- Centre for Neonatal and Paediatric Infection, St. George's, University of London, London, United Kingdom
| | - Laxmee Ramkhelawon
- Centre for Neonatal and Paediatric Infection, St. George's, University of London, London, United Kingdom
| | - Elisabeth Peregrine
- Department of Obstetrics and Gynaecology, Kingston Hospital NHS Foundation Trust, London, United Kingdom
| | - Nick Andrews
- UK Health Security Agency, London, United Kingdom
| | - Paul T Heath
- Centre for Neonatal and Paediatric Infection, St. George's, University of London, London, United Kingdom
| | - Kirsty Le Doare
- Centre for Neonatal and Paediatric Infection, St. George's, University of London, London, United Kingdom; Pathogen Immunology Group, UK Health Security Agency, Porton Down, United Kingdom; Makerere University Johns Hopkins University, Kampala, Uganda
| |
Collapse
|
3
|
Proto A, Agliardi S, Pani A, Renica S, Gazzaniga G, Giossi R, Senatore M, Di Ruscio F, Campisi D, Vismara C, Panetta V, Scaglione F, Martinelli S. COVID-Vaccines in Pregnancy: Maternal and Neonatal Response over the First 9 Months after Delivery. Biomolecules 2024; 14:435. [PMID: 38672452 PMCID: PMC11048428 DOI: 10.3390/biom14040435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Revised: 03/30/2024] [Accepted: 04/01/2024] [Indexed: 04/28/2024] Open
Abstract
Vaccination against SARS-CoV-2 has been demonstrated to be safe during gestation. Nevertheless, there are no robust data investigating the entity of maternal antibodies' transmission through the placenta to the newborn and the persistence of the antibodies in babies' serum. The objective of this study is to assess the maternal antibody transmission and kinetics among newborns in the first months of life. Women having received one or two doses of anti-SARS-CoV-2 mRNA-vaccines during pregnancy at any gestational age, and their newborns, were recruited and followed-up over 9 months. Ninety-eight women and 103 babies were included. At birth, we observed a significant positive correlation between maternal and neonatal serum anti-SARS-CoV-2 antibody levels and a significant negative correlation between the time since last dose and antibody levels in mothers with two doses. Over the follow-up, the birth antibody level significantly decreased in time according to the received doses number at 3, 6, and 9 months. During the follow-up, we registered 34 dyad SARS-CoV-2 infection cases. The decreasing trend was slower in the SARS-CoV-2 infection group and among breastfed non-infected babies. Antibodies from maternal anti-SARS-CoV-2 vaccination are efficiently transferred via the placenta and potentially even through breast milk. Among newborns, antibodies show relevant durability in the first months of life.
Collapse
Affiliation(s)
- Alice Proto
- Neonatal Intensive Care Unit, ASST Grande Ospedale Metropolitano Niguarda, 20161 Milan, Italy; (A.P.); (S.M.)
| | - Stefano Agliardi
- Department of Medical Biotechnology and Translational Medicine, Postgraduate School of Clinical Pharmacology and Toxicology, University of Milan, 20122 Milan, Italy;
| | - Arianna Pani
- Department of Oncology and Hemato-Oncology, University of Milan, 20122 Milan, Italy; (A.P.); (F.S.)
| | - Silvia Renica
- Department of Biomedical, Surgical and Dental Sciences, Postgraduate School of Microbiology and Virology, University of Milan, 20122 Milan, Italy; (S.R.); (F,D,R.)
| | - Gianluca Gazzaniga
- Department of Medical Biotechnology and Translational Medicine, Postgraduate School of Clinical Pharmacology and Toxicology, University of Milan, 20122 Milan, Italy;
| | - Riccardo Giossi
- Chemical-Clinical and Microbiological Analyses Unit, ASST Grande Ospedale Metropolitano Niguarda, 20161 Milan, Italy; (R.G.); (M.S.); (D.C.); (C.V.)
| | - Michele Senatore
- Chemical-Clinical and Microbiological Analyses Unit, ASST Grande Ospedale Metropolitano Niguarda, 20161 Milan, Italy; (R.G.); (M.S.); (D.C.); (C.V.)
| | - Federica Di Ruscio
- Department of Biomedical, Surgical and Dental Sciences, Postgraduate School of Microbiology and Virology, University of Milan, 20122 Milan, Italy; (S.R.); (F,D,R.)
| | - Daniela Campisi
- Chemical-Clinical and Microbiological Analyses Unit, ASST Grande Ospedale Metropolitano Niguarda, 20161 Milan, Italy; (R.G.); (M.S.); (D.C.); (C.V.)
| | - Chiara Vismara
- Chemical-Clinical and Microbiological Analyses Unit, ASST Grande Ospedale Metropolitano Niguarda, 20161 Milan, Italy; (R.G.); (M.S.); (D.C.); (C.V.)
| | - Valentina Panetta
- L’altrastatisticasrl, Consultancy & Training, Biostatistics Office, 00174 Rome, Italy;
| | - Francesco Scaglione
- Department of Oncology and Hemato-Oncology, University of Milan, 20122 Milan, Italy; (A.P.); (F.S.)
- Chemical-Clinical and Microbiological Analyses Unit, ASST Grande Ospedale Metropolitano Niguarda, 20161 Milan, Italy; (R.G.); (M.S.); (D.C.); (C.V.)
| | - Stefano Martinelli
- Neonatal Intensive Care Unit, ASST Grande Ospedale Metropolitano Niguarda, 20161 Milan, Italy; (A.P.); (S.M.)
| |
Collapse
|
4
|
Kayatani AKK, Bobbili N, Megnekou R, Matsunaga M, Leke RFG, Taylor DW. Are high avidity antibodies to Plasmodium falciparum antigens preferentially transferred across the placenta of premature and term babies? Placenta 2023; 140:11-19. [PMID: 37515848 PMCID: PMC10528449 DOI: 10.1016/j.placenta.2023.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/05/2023] [Accepted: 07/18/2023] [Indexed: 07/31/2023]
Abstract
INTRODUCTION Transplacental transport of maternal IgG via the neonatal Fc receptor (FcRn) provides babies with passive immunity. Several factors are reported to influence transport, including the avidity of antibodies (Abs) for their cognate antigens. Unfortunately, information on the role of antibody (Ab) avidity is limited. This study investigated if i) antibodies (Abs) with high avidity for 6 Plasmodium falciparum antigens and tetanus toxoid (TTx) were preferentially transferred to premature and term Cameroonian babies and ii) if Ab avidity was increased in babies whose mothers had placental malaria (PM), implicating the involvement of immune complexes. METHODS Total IgG (mg/ml) and Abs to malarial antigens (AMA1, EBA-175, MSP1-42, MSP2, MSP3, DBL5 of VAR2CSA) and TTx were measured in paired mother-cord samples obtained from premature and term deliveries in Cameroon. Half the women had PM at delivery. Avidity Indices (AIs) were determined by treating antigen-bound-Abs with different molar concentrations of NH4SCN and calculating 50% endpoints. RESULTS Total IgG and antigen-specific Abs increased in cord blood with gestational age; however, AIs did not. AIs in paired maternal-cord blood samples were strongly associated for all antigens (r = 0.77-0.96). However, no significant different in AIs was found between paired mother-cord blood samples for any of the antigens (p values > 0.05). Similarly, Ab avidity was not increased in cord blood of babies whose mothers had PM or hypergammaglobulinemia. DISCUSSION Overall, there was no evidence that higher avidity Abs to any of the malarial antigens or TTx were preferentially transferred to Cameroonian babies.
Collapse
Affiliation(s)
- Alexander K K Kayatani
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, 651 Ilalo Street, Bioscience Building, Room 320, Honolulu, HI, 96813, USA.
| | - Naveen Bobbili
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, 651 Ilalo Street, Bioscience Building, Room 320, Honolulu, HI, 96813, USA.
| | - Rosette Megnekou
- The Biotechnology Center, University of Yaoundé 1, BP 3851, Messa, Yaoundé, Cameroon.
| | - Masako Matsunaga
- Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawaii at Manoa, 651 Ilalo Street, Medical Education Building, Room 411, Honolulu, HI, 96813, USA.
| | - Rose F G Leke
- The Biotechnology Center, University of Yaoundé 1, BP 3851, Messa, Yaoundé, Cameroon.
| | - Diane Wallace Taylor
- Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa, 651 Ilalo Street, Bioscience Building, Room 320, Honolulu, HI, 96813, USA.
| |
Collapse
|
5
|
Pirosa MC, Peccatori FA. Lymphomas in pregnancy. Hematol Oncol 2023; 41 Suppl 1:70-74. [PMID: 37294956 DOI: 10.1002/hon.3150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 03/28/2023] [Indexed: 06/11/2023]
Abstract
Lymphoma in pregnancy is an uncommon occurrence. This diagnosis is challenging, and a multidisciplinary team of specialists in obstetrics, anesthesiology, neonatology, hematology psychology should participate in the management of this condition. The choice of treatment regimen depends on the histotype and the gestational age. In Hodgkin lymphoma, ABVD is safe if administered after the thirteenth week of pregnancy. In indolent non-Hodgkin Lymphomas (NHL) a watchful waiting approach is reasonable; in case of aggressive NHLs, if the diagnosis occurs in the first gestational weeks, a termination of the pregnancy might be considered or if it occurs after the thirteenth week of pregnancy, a standard R-CHOP regimen is safe. Regarding new anti-lymphoma drugs, available data on the potential fetotoxicity of these agents are limited. Data collection regarding the use of new drugs in pregnant patients is mandatory in order to learn more about their safety and facilitating clinical decision making in this setting of patients.
Collapse
Affiliation(s)
- Maria Cristina Pirosa
- Clinic of Medical Oncology, Oncology Institute of Southern Switzerland, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
- Faculty of Biomedical Science, Università della Svizzera italiana, Lugano, Switzerland
| | | |
Collapse
|
6
|
Vargas-Zambrano JC, Clark LR, Johnson DR, Monfredo C, Pool V, Li L, Bouvet PE, Blangero Y, Macina D. Prenatal tetanus-diphtheria-acellular pertussis vaccine effectiveness at preventing infant pertussis. Vaccine 2023; 41:2968-2975. [PMID: 37032227 DOI: 10.1016/j.vaccine.2023.03.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 02/28/2023] [Accepted: 03/22/2023] [Indexed: 04/11/2023]
Abstract
OBJECTIVE To evaluate the effectiveness of the tetanus, diphtheria, and acellular pertussis (Tdap) vaccine containing five pertussis components (Tdap5; Adacel®, Sanofi) when given during pregnancy at preventing pertussis in infants less than 2 months of age. METHODS The US Centers for Disease Control and Prevention (CDC), in collaboration with the Emerging Infections Program (EIP) Network, undertook a case-control study evaluating the effectiveness of Tdap vaccination in pregnancy against pertussis in infants less than 2 months of age based on data collected by the EIP Network from 2011 through 2014. The dataset from the CDC/EIP Network study was used to conduct this product-specific vaccine effectiveness analysis of Tdap5 vaccination in pregnancy to prevent disease in young infants. The main outcome of interest was vaccine effectiveness in infants whose pregnant parents were vaccinated with Tdap5 between 27 and 36 weeks' gestation, in accordance with the ideal timing for Tdap vaccination in pregnancy recommended by the US Advisory Committee on Immunization Practices. Odd ratios (ORs) and 95 % confidence intervals (CIs) were estimated using conditional logistic regression, and vaccine effectiveness was calculated as (1-OR) × 100 %. RESULTS There were 160 infant pertussis cases and 302 matched controls included in this Tdap5-specific study. Tdap5 effectiveness in preventing pertussis in infants whose pregnant parents were vaccinated between 27 and 36 weeks' gestation was 92.5 % (95 % CI, 38.5 %-99.1 %). Effectiveness of Tdap5 against pertussis-related hospitalization in infants whose pregnant parents were vaccinated between 27 and 36 weeks' gestation could not be calculated due to lack of discordance among matched cases and controls. Vaccination of the parents after pregnancy or less than 14 days before delivery did not protect infants from pertussis. CONCLUSIONS Tdap5 vaccination in pregnancy between 27 and 36 weeks' gestation is highly effective at protecting young infants from pertussis. STUDY REGISTRATION ClinicalTrials.gov, NCT05040802.
Collapse
Affiliation(s)
| | | | | | | | | | - Lin Li
- Epidemiology and Benefit Risk, Sanofi, Bridgewater, NJ, USA
| | | | | | - Denis Macina
- Global Medical Evidence Generation, Sanofi, Lyon, France
| |
Collapse
|
7
|
Karita E, Nyombayire J, Ingabire R, Mazzei A, Sharkey T, Mukamuyango J, Allen S, Tichacek A, Parker R, Priddy F, Sayinzoga F, Nsanzimana S, Robinson C, Katwere M, Anumendem D, Leyssen M, Schaefer M, Wall KM. Safety, reactogenicity, and immunogenicity of a 2-dose Ebola vaccine regimen of Ad26.ZEBOV followed by MVA-BN-Filo in healthy adult pregnant women: study protocol for a phase 3 open-label randomized controlled trial. Trials 2022; 23:513. [PMID: 35725488 PMCID: PMC9207821 DOI: 10.1186/s13063-022-06360-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 04/26/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Risks to mother and fetus following Ebola virus infection are very high. Evaluation of safety and immunogenicity of non-replicating Ebola vaccine candidates is a priority for use in pregnant women. This is the protocol for a randomized, open-label, single-center phase 3 clinical trial of the safety, reactogenicity, and immunogenicity of the 2-dose Ebola vaccine regimen in healthy adult pregnant women. This 2-dose regimen has been shown to be safe, judged effective, and approved in non-pregnant populations. METHODS A total of 2000 adult (≥ 18 years of age) pregnant women will be enrolled from antenatal care facilities in Western Rwanda and randomized (1:1) to receive the 2-dose Ebola vaccine regimen (Ad26.ZEBOV, MVA-BN-Filo (group A)) or control (unvaccinated pregnant women (group B)). The primary objectives are to (1) assess adverse maternal/fetal outcomes in randomized pregnant women up to 1.5 months after delivery and (2) assess adverse neonatal/infant outcomes in neonates/infants born to randomized women up to 3.5 months after birth. The frequency and relatedness of all serious adverse events in women and newborns from randomization or birth, respectively, until study end will be reported. The reactogenicity and unsolicited adverse events of the 2-dose Ebola vaccine regimen in all vaccinated pregnant women (group A) will be reported. We will also assess the immunogenicity of the 2-dose Ebola vaccine regimen in 150 pregnant women who are anticipated to receive both vaccine doses within the course of their pregnancy (a subset of the 1000 pregnant vaccinated women from group A) compared to 150 non-pregnant women vaccinated after delivery (a subset of group B). The persistence of maternal antibodies in 75 infants born to women from the group A subset will be assessed. Exploratory analyses include assessment of acceptability of the 2-dose Ebola vaccine regimen among group A and assessment of maternal antibodies in breast milk in 50 women from group A and 10 controls (women from group B prior to vaccination). DISCUSSION This study is intended to support a label variation to relax restrictions on use in pregnant women, a vulnerable population with high medical need. TRIAL REGISTRATION Clinicaltrials.gov NCT04556526 . September 21, 2020.
Collapse
Affiliation(s)
- Etienne Karita
- Rwanda Zambia Health Research Group, Center for Family Health Research/Projet San Francisco, Kigali, Rwanda
| | - Julien Nyombayire
- Rwanda Zambia Health Research Group, Center for Family Health Research/Projet San Francisco, Kigali, Rwanda
| | - Rosine Ingabire
- Rwanda Zambia Health Research Group, Center for Family Health Research/Projet San Francisco, Kigali, Rwanda
| | - Amelia Mazzei
- Rwanda Zambia Health Research Group, Center for Family Health Research/Projet San Francisco, Kigali, Rwanda
| | - Tyronza Sharkey
- Rwanda Zambia Health Research Group, Center for Family Health Research/Projet San Francisco, Kigali, Rwanda
| | - Jeannine Mukamuyango
- Rwanda Zambia Health Research Group, Center for Family Health Research/Projet San Francisco, Kigali, Rwanda
| | - Susan Allen
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA
| | - Amanda Tichacek
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA
| | - Rachel Parker
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA
| | | | | | | | | | | | | | | | - Malinda Schaefer
- Department of Obstetrics, Gynecology and Reproductive Sciences, Division of Maternal Fetal Medicine, University of Pittsburgh Magee-Women's Hospital, Pittsburgh, PA, USA
| | - Kristin M Wall
- Rwanda Zambia Health Research Group, Department of Pathology & Laboratory Medicine, School of Medicine, Emory University, Atlanta, GA, USA. .,Department of Epidemiology, Rollins School of Public Health, Laney Graduate School, Emory University, Atlanta, GA, USA.
| |
Collapse
|
8
|
Atwell JE, Lutz CS, Sparrow EG, Feikin DR. Biological factors that may impair transplacental transfer of RSV antibodies: Implications for maternal immunization policy and research priorities for low- and middle-income countries. Vaccine 2022; 40:4361-4370. [PMID: 35725783 PMCID: PMC9348036 DOI: 10.1016/j.vaccine.2022.06.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 04/19/2022] [Accepted: 06/01/2022] [Indexed: 11/26/2022]
Abstract
Respiratory syncytial virus (RSV) is the leading viral cause of acute lower respiratory tract infection (ALRI), including bronchiolitis and pneumonia, in infants and children worldwide. Protection against RSV is primarily antibody mediated and passively acquired RSV neutralizing antibody can protect infants from RSV ALRI. Maternal immunization is an attractive strategy for the prevention of RSV in early infancy when immune responses to active immunization may be suboptimal and most severe RSV disease and death occur. However, several biologic factors have been shown to potentially attenuate or interfere with the transfer of protective naturally acquired antibodies from mother to fetus and could therefore also reduce vaccine effectiveness through impairment of transfer of vaccine-induced antibodies. Many of these factors are prevalent in low- and middle-income countries (LMIC) which experience the greatest burden of RSV-associated mortality; more data are needed to understand these mechanisms in the context of RSV maternal immunization. This review will focus on what is currently known about biologic conditions that may impair RSV antibody transfer, including preterm delivery, low birthweight, maternal HIV infection, placental malaria, and hypergammaglobulinemia (high levels of maternal total IgG). Key data gaps and priority areas for research are highlighted and include improved understanding of the epidemiology of hypergammaglobulinemia and the mechanisms by which it may impair antibody transfer. Key considerations for ensuring optimal vaccine effectiveness in LMICs are also discussed.
Collapse
Affiliation(s)
- Jessica E Atwell
- Johns Hopkins Bloomberg School of Public Health, Department of International Health, Global Disease Epidemiology and Control, Baltimore, MD, USA
| | - Chelsea S Lutz
- Johns Hopkins Bloomberg School of Public Health, Department of International Health, Global Disease Epidemiology and Control, Baltimore, MD, USA
| | - Erin G Sparrow
- The World Health Organization, Department of Immunization, Vaccines and Biologicals, Geneva, Switzerland
| | - Daniel R Feikin
- The World Health Organization, Department of Immunization, Vaccines and Biologicals, Geneva, Switzerland
| |
Collapse
|
9
|
The Benefits of Vaccination against SARS-CoV-2 during Pregnancy in Favor of the Mother/Newborn Dyad. Vaccines (Basel) 2022; 10:vaccines10060848. [PMID: 35746456 PMCID: PMC9228905 DOI: 10.3390/vaccines10060848] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/16/2022] [Accepted: 05/24/2022] [Indexed: 12/14/2022] Open
Abstract
When the first vaccines against SARS-CoV-2 emerged, pregnant women were excluded from clinical trials, so vaccine recommendations were initially adjourned, with late initiation for this populational category. The present study aims to quantify the serum and breastmilk values of SARS-CoV-2 spike protein antibodies in both the mother and her newborn after complete vaccination during pregnancy. Ninety-one vaccinated patients were included, some of whom presented COVID-19 infection during pregnancy. In the delivery room, venous blood was collected from the mother and umbilical cord blood from her offspring. All samples were processed using the ECLIA (electrochemiluminescence) method. Breastmilk was collected and tested during the third postnatal day. The highest maternal serum values were 19,523 U/mL (detection limit > 0.8 U/mL) and in breastmilk, 206.7 U/mL. Every single newborn had antibody values higher than 0, with a mean serum value (M = 5288.37, SD = 5661.49) significantly higher than 0, t(90) = 8.91, p < 0.001. Consequently, this study intents to emphasize the importance of vaccination against SARS-CoV-2 during pregnancy. This double kind of neonatal protection, attained by placental and breastmilk transfer, can be accomplished by encouraging vaccination, breastfeeding, bonding, and providing maternal empowerment to participate in her infant’s care.
Collapse
|
10
|
Enengl S, Pecks U, Oppelt P, Stelzl P, Trautner PS, Shebl O, Lamprecht B, Longardt AC, Eckmann-Scholz C, Keil C, Mand N, von Kaisenberg CS, Jegen M, Doppler S, Lastinger J. Antibody Response and Maternofetal Antibody Transfer in SARS-CoV-2-Positive Pregnant Women: A Multicenter Observational Study. Geburtshilfe Frauenheilkd 2022; 82:501-509. [PMID: 35528188 PMCID: PMC9076216 DOI: 10.1055/a-1768-0415] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 02/08/2022] [Indexed: 12/20/2022] Open
Abstract
Introduction
Awareness of SARS-CoV-2 infection in pregnant women and the potential risk for infection of their neonates is increasing. The aim of this study was to examine the immune
status of affected women and evaluate the dynamics of placental antibody transfer.
Materials and Methods
The study included 176 women with SARS-CoV-2 infection during pregnancy who delivered between April 2020 and December 2021 at eight obstetric maternity sites.
Demographic data, maternal and neonatal characteristics were summarized. Antibody testing for IgA and IgG in maternal blood sera and umbilical cord samples was evaluated and IgG transfer
ratios were calculated. Values were related to the time of infection during pregnancy and birth.
Results
The percentage of IgG positive women increased from 29.0% (95% CI 23.8 – 37.8) at presentation with a positive PCR test result to 75.7% (95% CI 71.6 – 79.8), the percentage
of IgG positive umbilical cord blood samples increased from 17.1% (95% CI 13.0 – 21.3) to 76.4% (95% CI 72.2 – 80.7) at more than six weeks after infection. Regression lines differed
significantly between maternal and fetal IgG responses (p < 0.0001). Newborns react with a latency of about one week; umbilical cord blood antibody concentrations are highly correlated
with maternal concentration levels (ρ = 0.8042; p < 0.0001). IgG transplacental transfer ratios were dependent on infection-to-birth interval. Two of the umbilical cord blood samples
tested positive for IgA.
Conclusions
These findings confirm vertical SARS-CoV-2 transmission is rare; however, antibodies are transferred to the fetus soon after infection during pregnancy. Since
transplacental antibody transfer might have a protective value for neonatal immunization this information may be helpful when counseling affected women.
Collapse
Affiliation(s)
- Sabine Enengl
- Department of Gynecology, Obstetrics, and Gynecological Endocrinology, Kepler University Hospital, Johannes Kepler University Linz, Linz, Austria
| | - Ulrich Pecks
- Department of Obstetrics, Schleswig-Holstein University Hospital, Kiel, Germany
| | - Peter Oppelt
- Department of Gynecology, Obstetrics, and Gynecological Endocrinology, Kepler University Hospital, Johannes Kepler University Linz, Linz, Austria
| | - Patrick Stelzl
- Department of Gynecology, Obstetrics, and Gynecological Endocrinology, Kepler University Hospital, Johannes Kepler University Linz, Linz, Austria
| | - Philip Sebastian Trautner
- Department of Gynecology, Obstetrics, and Gynecological Endocrinology, Kepler University Hospital, Johannes Kepler University Linz, Linz, Austria
| | - Omar Shebl
- Department of Gynecology, Obstetrics, and Gynecological Endocrinology, Kepler University Hospital, Johannes Kepler University Linz, Linz, Austria
| | - Bernd Lamprecht
- Department of Pulmonology, Kepler University Hospital, Johannes Kepler University Linz, Linz, Austria
| | | | | | - Corinna Keil
- Department of Obstetrics, Philipps University of Marburg, Marburg, Germany
| | - Nadine Mand
- Department of Pediatrics, Philipps University of Marburg, Marburg, Germany
| | | | - Magdalena Jegen
- Department of Obstetrics and Gynecology, University Hospital, LMU, Munich, Germany
| | - Stefan Doppler
- Department of Pathology, Kepler University Hospital, Johannes Kepler University Linz, Linz, Austria
| | - Julia Lastinger
- Department of Gynecology, Obstetrics, and Gynecological Endocrinology, Kepler University Hospital, Johannes Kepler University Linz, Linz, Austria
| |
Collapse
|
11
|
Bejitual K, Fikre R, Ashegu T, Zenebe A. Determinants of neonatal sepsis among neonates admitted to the neonatal intensive care unit of public hospitals in Hawassa City Administration, Sidama Region, Ethiopia, 2020: an unmatched, case-control study. BMJ Open 2022; 12:e056669. [PMID: 35504644 PMCID: PMC9066491 DOI: 10.1136/bmjopen-2021-056669] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
OBJECTIVE This study was conducted to assess the determinants of neonatal sepsis in the neonatal intensive care units of public hospitals in Hawassa City Administration, Sidama Region, Ethiopia, in 2020. DESIGN Institutional-based, unmatched, case-control study. SETTING The study was conducted in three public hospitals (Hawassa University Teaching Hospital, Adare General Hospital and Hawela Tula Primary Hospital) of Hawassa City, Ethiopia. PARTICIPANTS A total of 331 (110 cases and 221 controls) neonates with their index mothers were included in the study from 1 August to 30 September 2020. OUTCOME MEASURES A pretested, interviewer-administered questionnaire and data extraction checklist were used to collect data. Data were coded and entered into EpiData V.3.1 before being exported to SPSS V.20 for analysis. The factors associated with neonatal sepsis were assessed using bivariable and multivariable logistic regression analyses. P value of less than 0.05 was used to establish statistically significant association of variables. RESULTS Caesarean section delivery (adjusted OR (AOR)=2.56, 95 % CI 1.3 to 5.00), maternal anaemia (AOR=2.58, 95 % CI 1.45 to 4.6) and lack of vaccination with tetanus toxoid (AOR=3.5, 95% CI 2.07 to 6.19) were all identified as factors significantly associated with neonatal sepsis. CONCLUSIONS Caesarean section delivery, maternal history of anaemia and lack of vaccination with tetanus toxoid were found to be risk factors for neonatal sepsis. Establishing preconception care practice, strengthening the quality of antenatal care and standardising infection prevention practice are needed to improve neonatal health.
Collapse
Affiliation(s)
| | - Rekiku Fikre
- Department of Midwifery, Hawassa University College of Medicine and Health Sciences, Hawassa, Ethiopia
| | - Tebeje Ashegu
- Department of Midwifery, Hawassa University College of Medicine and Health Sciences, Hawassa, Ethiopia
| | - Andualem Zenebe
- Department of Public Health, Hawassa College of Health Science, Hawassa, Ethiopia
| |
Collapse
|
12
|
Pawlowski A, Lannergård J, Gonzalez-Miro M, Cao D, Larsson S, Persson JJ, Kitson G, Darsley M, Rom AL, Hedegaard M, Fischer PB, Johansson-Lindbom B. A group B Streptococcus alpha-like protein subunit vaccine induces functionally active antibodies in humans targeting homotypic and heterotypic strains. Cell Rep Med 2022; 3:100511. [PMID: 35243418 PMCID: PMC8861819 DOI: 10.1016/j.xcrm.2022.100511] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/17/2021] [Accepted: 01/07/2022] [Indexed: 11/18/2022]
Abstract
Maternal vaccination is a promising strategy for preventing neonatal disease caused by group B Streptococcus. The safety and immunogenicity of the prototype vaccine GBS-NN, a fusion protein consisting of the N-terminal domains of the alpha-like proteins (Alp) αC and Rib, were recently evaluated favorably in healthy adult women in a phase 1 trial. Here we demonstrate robust immunoglobulin G (IgG) and immunoglobulin A (IgA) responses against αC and Rib, as well as against the heterotypic Alp family members Alp1–Alp3. IgA and heterotypic IgG responses are more variable between subjects and correlate with pre-existing immunity. Vaccine-induced IgG mediates opsonophagocytic killing and prevents bacterial invasion of epithelial cells. Like the vaccine-induced response, naturally acquired IgG against the vaccine domains is dominated by IgG1. Consistent with the high IgG1 cross-placental transfer rate, naturally acquired IgG against both domains reaches higher concentrations in neonatal than maternal blood, as assessed in a separate group of non-vaccinated pregnant women and their babies. GBS-NN subunit vaccine broadly elicits IgG1 to homotypic αC and Rib N-terminal domains IgA and heterotypic IgG responses occur in vaccinees with pre-existing immunity Abs mediate opsonophagocytic killing and prevent bacterial epithelial cell invasion IgG against αC-N and Rib-N is transferred efficiently across the placenta
Collapse
Affiliation(s)
| | - Jonas Lannergård
- Immunology Section, BMC D14, Lund University, 221 84 Lund, Sweden
| | | | - Duojia Cao
- Immunology Section, BMC D14, Lund University, 221 84 Lund, Sweden
| | - Sara Larsson
- Immunology Section, BMC D14, Lund University, 221 84 Lund, Sweden
| | - Jenny J Persson
- Immunology Section, BMC D14, Lund University, 221 84 Lund, Sweden
| | - Geoff Kitson
- Minervax A/S, Ole Maaløes Vej 3, 2200 Copenhagen N, Denmark
| | | | - Ane Lilleøre Rom
- Department of Obstetrics, the Juliane Marie Centre, Copenhagen University Hospital Rigshospitalet, 2100 Copenhagen, Denmark.,The Research Unit for Women's and Children's Health, the Juliane Marie Centre, Copenhagen University Hospital Rigshospitalet, 2100 Copenhagen, Denmark
| | - Morten Hedegaard
- Department of Obstetrics, the Juliane Marie Centre, Copenhagen University Hospital Rigshospitalet, 2100 Copenhagen, Denmark
| | - Per B Fischer
- Minervax A/S, Ole Maaløes Vej 3, 2200 Copenhagen N, Denmark
| | - Bengt Johansson-Lindbom
- Immunology Section, BMC D14, Lund University, 221 84 Lund, Sweden.,Minervax A/S, Ole Maaløes Vej 3, 2200 Copenhagen N, Denmark
| |
Collapse
|
13
|
BNT162b2 Vaccination during Pregnancy Protects Both the Mother and Infant: Anti-SARS-CoV-2 S Antibodies Persistently Positive in an Infant at 6 Months of Age. Case Rep Pediatr 2021; 2021:6901131. [PMID: 34676123 PMCID: PMC8526266 DOI: 10.1155/2021/6901131] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 09/04/2021] [Accepted: 10/05/2021] [Indexed: 02/01/2023] Open
Abstract
Vaccinations are the most important intervention for controlling the ongoing coronavirus disease (COVID-19) pandemic, caused by the SARS-CoV-2 virus. BNT162b2 is an mRNA-based vaccine, which is promising and safe for use during pregnancy, as it could help prevent SARS-CoV-2 infection and its complications during pregnancy. Other vaccines, such as influenza and Tdap (tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis) vaccines, provide significant protection for babies. Recent studies have shown that COVID-19 antibodies are present in newborns at birth, owing to maternal BNT162b2 vaccination during pregnancy; however, it is currently unclear how long these antibodies could protect infants from SARS-CoV-2 infection and its complications. Herein, we present the case of a preterm baby born at 33 weeks via an emergency cesarean section owing to maternal complications. The mother had received two doses of the BNT162b2 vaccine at 22 and 26 weeks of gestation. Positive anti-SARS-CoV-2 S antibodies were detected in the infant at 2 weeks, 6 weeks, 3 months, and 6 months of age. This is the first case report in which BNT162b2 vaccination during pregnancy yielded a persistent immune response in an infant at 6 months of age. The declining anti-SARS-CoV-2 S antibody titers noted at 6 months of age emphasize the need for the vaccination of children at this age.
Collapse
|
14
|
Dad N, Buhmaid S, Mulik V. Vaccination in pregnancy - The when, what and how? Eur J Obstet Gynecol Reprod Biol 2021; 265:1-6. [PMID: 34403876 DOI: 10.1016/j.ejogrb.2021.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/24/2021] [Accepted: 08/05/2021] [Indexed: 01/07/2023]
Abstract
Immunization is a fundamental component of preventive healthcare. This gain special significance in pregnancy. Maternal antigen-specific IgG, is actively transported across the placenta during pregnancy. This significantly, contributes to infant immunity in the first few months of life. Vaccination during pregnancy has the potential to indirectly protect the most vulnerable infants during the first few months of life, when vaccine responses are generally poor and it is difficult to achieve rapid protection through immunization. This is especially relevant when there is prior exposure to infection in woman or vaccine administration. A vaccine given during pregnancy in these women would result in a booster response and a relatively high level of IgG protecting their children in initial few months of life. Passive antibody transfer from mother to fetus can protect fetuses from infection until their own immunization schedule is initiated. Lack of administration of appropriate vaccination to women during pregnancy lead to an increase in maternal and fetal morbidity and mortality from preventable infections like influenza, pertussis. Various preventable infections can lead to intensive care unit admission for mothers, preterm birth, and low birth weight babies. Recent covid pandemic has brought issue of vaccine use in pregnancy at forefront of all expectant mothers. Immunization with inactivated virus, bacterial vaccine and toxoids showed no evidence of adverse fetal effects. As a rule, live attenuated vaccines are not recommended in pregnancy. This paper gives snapshot of all vaccines, which can be used in pregnancy along with brief details regards various bacterial and viral infections , their common clinical features and effects on pregnancy outcome as well as fetus. This is will provide a useful guide for healthcare providers.
Collapse
Affiliation(s)
- Nimra Dad
- Sidra Medicine, PO Box 26999, Education city, Doha, Qatar
| | - Sara Buhmaid
- Sidra Medicine, PO Box 26999, Education city, Doha, Qatar
| | - Varsha Mulik
- Sidra Medicine, PO Box 26999, Education city, Doha, Qatar.
| |
Collapse
|
15
|
Giles ML, Davey MA, Wallace EM. Associations Between Maternal Immunisation and Reduced Rates of Preterm Birth and Stillbirth: A Population Based Retrospective Cohort Study. Front Immunol 2021; 12:704254. [PMID: 34557193 PMCID: PMC8454544 DOI: 10.3389/fimmu.2021.704254] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Accepted: 07/26/2021] [Indexed: 11/13/2022] Open
Abstract
Stillbirth and preterm birth (PTB) remain two of the most important, unresolved challenges in modern pregnancy care. Approximately 10% of all births are preterm with nearly one million children dying each year due to PTB. It remains the most common cause of death among children under five years of age. The numbers for stillbirth are no less shocking with 2.6 million babies stillborn each year. With minimal impact on the rate of these adverse birth outcomes over the past decade there is an urgent need to identify more effective interventions to tackle these problems. In this retrospective cohort study, we used whole-of-population data, to determine if maternal immunization during pregnancy against influenza and/or pertussis, is associated with a lower risk of PTB, delivering a small-for-gestational age (SGA) infant, developing preeclampsia or stillbirth. Women with a singleton pregnancy at 28 or more weeks' gestation delivering in Victoria, Australia from July 2015 to December 2018 were included in the analysis. Log-binomial regression was used to measure the relationship between vaccination during pregnancy against influenza and against pertussis, with preterm birth, SGA, preeclampsia and stillbirth. Variables included in the adjusted model were maternal age, body mass index, first or subsequent birth, maternal Indigenous status, socio-economic quintile, smoking, public or private maternity care and metropolitan or rural location of the hospital. Women who received influenza vaccine were 75% less likely to have a stillbirth (aRR 025; 95% CI 0.20, 0.31), and 31% less likely to birth <37 weeks (aRR 0.69; 95% CI 0.66, 0.72). Women who received pertussis vaccine were 77% less likely to have a stillbirth (aOR 0.23; 95% CI 0.18, 0.28) and 32% less likely to birth <37 weeks gestation (aRR 0.68; 95% CI 0.66, 0.71). Vaccination also reduced the odds of small for gestational age by 13% and reduced the odds of pre-eclampsia when restricted to primiparous women. This association was seen over four different influenza seasons and independent of the time of year suggesting that any protective effect on obstetric outcomes afforded by maternal vaccination may not be due to a pathogen-specific response but rather due to pathogen-agnostic immune-modulatory effects.
Collapse
Affiliation(s)
- Michelle L. Giles
- The Ritchie Centre, Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC, Australia
| | | | | |
Collapse
|
16
|
Luttwak E, Gurevich-Shapiro A, Azem F, Lishner M, Klieger C, Herishanu Y, Perry C, Avivi I. Novel agents for the treatment of lymphomas during pregnancy: A comprehensive literature review. Blood Rev 2021; 49:100831. [PMID: 33931297 DOI: 10.1016/j.blre.2021.100831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/12/2021] [Accepted: 04/12/2021] [Indexed: 11/28/2022]
Abstract
Lymphoproliferative diseases occurring during pregnancy present unique diagnostic and therapeutic challenges aiming to achieve maternal cure without impairing fetal health, growth, and survival. These goals are further complicated by the fast-paced emergence of novel therapies and their introduction as standard of care, even in newly diagnosed patients. Due to the rarity of hematological malignancies in pregnancy and the exclusion of pregnancy in almost all clinical trials, available data on the fetal effects of novel drugs are limited to animal models and case reports. The current review addresses the entire multidisciplinary team involved in treating pregnant patients with lymphoproliferative diseases. We describe novel agents according to their mechanism of action, and summarize our knowledge of their effects during the gestational period, particularly those associated with fetotoxicity. Therapeutic dilemmas associated with the employment of these new agents are also discussed.
Collapse
Affiliation(s)
- E Luttwak
- Division of Hematology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - A Gurevich-Shapiro
- Division of Hematology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Immunology, Weizmann Institute of Science, Rehovot, Israel.
| | - F Azem
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; IVF Unit, Department of Obstetrics and Gynecology, Lis Maternity Hospital, Tel Aviv Sourasky Medical, Tel Aviv, Israel
| | - M Lishner
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Research Institue, Meir Medical Center, Kfar Saba, Israel
| | - C Klieger
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; IVF Unit, Department of Obstetrics and Gynecology, Lis Maternity Hospital, Tel Aviv Sourasky Medical, Tel Aviv, Israel
| | - Y Herishanu
- Division of Hematology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - C Perry
- Division of Hematology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - I Avivi
- Division of Hematology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| |
Collapse
|
17
|
Abu-Raya B, Maertens K. Protection of the Newborn Through Vaccination in Pregnancy. Neoreviews 2021; 22:e25-e39. [PMID: 33386312 DOI: 10.1542/neo.22-1-e25] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Newborns and infants are at risk for severe infections with some pathogens (eg, Bordetella pertussis, influenza, respiratory syncytial virus, group B Streptococcus) during early life. To decrease this window of high susceptibility to some infections during early life and protect young infants, vaccination in pregnancy against some vaccine-preventable diseases (eg, influenza, pertussis, tetanus) has been recommended in an increasing number of countries with notable success. In addition, recent advances have been made in developing vaccines for pregnant women with the aim of reducing the respiratory syncytial virus and group B Streptococcus burden in infancy. In this article, we review the vaccines currently recommended during pregnancy and their benefits to newborns and infants. We also discuss progress made in the development of other vaccines that are expected to be evaluated in pregnant women in the near future.
Collapse
Affiliation(s)
- Bahaa Abu-Raya
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada.,Vaccine Evaluation Center, British Columbia Children's Hospital Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kirsten Maertens
- Centre for the Evaluation of Vaccination, Vaccine & Infectious Diseases Institute, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| |
Collapse
|
18
|
Cinicola B, Conti MG, Terrin G, Sgrulletti M, Elfeky R, Carsetti R, Fernandez Salinas A, Piano Mortari E, Brindisi G, De Curtis M, Zicari AM, Moschese V, Duse M. The Protective Role of Maternal Immunization in Early Life. Front Pediatr 2021; 9:638871. [PMID: 33996688 PMCID: PMC8113393 DOI: 10.3389/fped.2021.638871] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 03/26/2021] [Indexed: 12/16/2022] Open
Abstract
With birth, the newborn is transferred from a quasi-sterile environment to the outside world. At this time, the neonatal immune system is inexperienced and continuously subject to a process of development as it encounters different antigenic stimuli after birth. It is initially characterized by a bias toward T helper 2 phenotype, reduced T helper 1, and cytotoxic responses to microbial stimuli, low levels of memory, and effector T and B cells and a high production of suppressive T regulatory cells. The aim of this setting, during fetal life, is to maintain an anti-inflammatory state and immune-tolerance. Maternal antibodies are transferred during pregnancy through the placenta and, in the first weeks of life of the newborn, they represent a powerful tool for protection. Thus, optimization of vaccination in pregnancy represents an important strategy to reduce the burden of neonatal infections and sepsis. Beneficial effects of maternal immunization are universally recognized, although the optimal timing of vaccination in pregnancy remains to be defined. Interestingly, the dynamic exchange that takes place at the fetal-maternal interface allows the transfer not only of antibodies, but also of maternal antigen presenting cells, probably in order to stimulate the developing fetal immune system in a harmless way. There are still controversial effects related to maternal immunization including the so called "immunology blunting," i.e., a dampened antibody production following infant's vaccination in those infants who received placentally transferred maternal immunity. However, clinical relevance of this phenomenon is still not clear. This review will provide an overview of the evolution of the immune system in early life and discuss the benefits of maternal vaccination. Current maternal vaccination policies and their rationale will be summarized on the road to promising approaches to enhance immunity in the neonate.
Collapse
Affiliation(s)
- Bianca Cinicola
- Department of Maternal and Child Health and Urological Sciences, Policlinico Umberto I, Sapienza University of Rome, Rome, Italy.,Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Maria Giulia Conti
- Department of Maternal and Child Health and Urological Sciences, Policlinico Umberto I, Sapienza University of Rome, Rome, Italy.,Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Gianluca Terrin
- Department of Maternal and Child Health and Urological Sciences, Policlinico Umberto I, Sapienza University of Rome, Rome, Italy
| | - Mayla Sgrulletti
- Pediatric Immunopathology and Allergology Unit, University of Rome Tor Vergata, Policlinico Tor Vergata, Rome, Italy.,Ph.D. Program in Immunology, Molecular Medicine and Applied Biotechnology, University of Rome Tor Vergata, Rome, Italy
| | - Reem Elfeky
- Department of Clinical Immunology, Royal Free Hospital, London, United Kingdom.,Infection, Immunity & Inflammation Department, Institute of Child Health, University College London (UCL), London, United Kingdom
| | - Rita Carsetti
- Diagnostic Immunology Research Unit, Multimodal Medicine Research Area, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.,Microbiology and Diagnostic Immunology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Ane Fernandez Salinas
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy.,Diagnostic Immunology Research Unit, Multimodal Medicine Research Area, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Eva Piano Mortari
- Diagnostic Immunology Research Unit, Multimodal Medicine Research Area, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Giulia Brindisi
- Department of Maternal and Child Health and Urological Sciences, Policlinico Umberto I, Sapienza University of Rome, Rome, Italy
| | - Mario De Curtis
- Department of Maternal and Child Health and Urological Sciences, Policlinico Umberto I, Sapienza University of Rome, Rome, Italy
| | - Anna Maria Zicari
- Department of Maternal and Child Health and Urological Sciences, Policlinico Umberto I, Sapienza University of Rome, Rome, Italy
| | - Viviana Moschese
- Pediatric Immunopathology and Allergology Unit, University of Rome Tor Vergata, Policlinico Tor Vergata, Rome, Italy.,Department Saint Camillus International University of Health and Medical Sciences, Rome, Italy
| | - Marzia Duse
- Department of Maternal and Child Health and Urological Sciences, Policlinico Umberto I, Sapienza University of Rome, Rome, Italy
| |
Collapse
|
19
|
Kappler K, Restin T, Lasanajak Y, Smith DF, Bassler D, Hennet T. Limited Neonatal Carbohydrate-Specific Antibody Repertoire Consecutive to Partial Prenatal Transfer of Maternal Antibodies. Front Immunol 2020; 11:573629. [PMID: 33162988 PMCID: PMC7591393 DOI: 10.3389/fimmu.2020.573629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/08/2020] [Indexed: 12/20/2022] Open
Abstract
Despite the prominence of carbohydrate-specific antibodies in human sera, data on their emergence and antigen specificities are limited. Whereas maternal IgG are transferred prenatally to the fetal circulation, IgM present in cord blood originate from fetal B lymphocytes. Considering the limited exposure of the fetus to foreign antigens, we assessed the repertoire of carbohydrate-specific antibodies in human cord blood and matched maternal blood samples using glycan arrays. Carbohydrate-specific IgM was absent in cord blood, whereas low cord blood IgG reactivity to glycans was detectable. Comparing IgG reactivities of matched pairs, we observed a general lack of correlation in the antigen specificity of IgG from cord blood and maternal blood due to a selective exclusion of most carbohydrate-specific IgG from maternofetal transfer. Given the importance of intestinal bacteria in inducing carbohydrate-specific antibodies, we analyzed global antibody specificities toward commensal bacteria. Similar IgG reactivities to specific Bacteroides species were detected in matched cord and maternal blood samples, thus pointing to an efficient maternal transfer of anti-microbial IgG. Due to the observed selectivity in maternofetal IgG transfer, the lack of fetal antibodies to carbohydrate epitopes is only partially compensated by maternal IgG, thus resulting in a weak response to carbohydrate antigens in neonates.
Collapse
Affiliation(s)
| | - Tanja Restin
- Institute of Physiology, University of Zurich, Zurich, Switzerland.,Department of Neonatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Yi Lasanajak
- Emory Comprehensive Glycomics Core, Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, United States
| | - David F Smith
- Emory Comprehensive Glycomics Core, Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, United States
| | - Dirk Bassler
- Department of Neonatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Thierry Hennet
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| |
Collapse
|
20
|
Saso A, Kampmann B. Maternal Immunization: Nature Meets Nurture. Front Microbiol 2020; 11:1499. [PMID: 32849319 PMCID: PMC7396522 DOI: 10.3389/fmicb.2020.01499] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 06/09/2020] [Indexed: 12/17/2022] Open
Abstract
Vaccinating women in pregnancy (i.e., maternal immunization) has emerged as a promising tool to tackle infant morbidity and mortality worldwide. This approach nurtures a 'gift of nature,' whereby antibody is transferred from mother to fetus transplacentally during pregnancy, or postnatally in breast milk, thereby providing passive, antigen-specific protection against infections in the first few months of life, a period of increased immune vulnerability for the infant. In this review, we briefly summarize the rationale for maternal immunization programs and the landscape of vaccines currently in use or in the pipeline. We then direct the focus to the underlying biological phenomena, including the main mechanisms by which maternally derived antibody is transferred efficiently to the infant, at the placental interface or in breast milk; important research models and methodological approaches to interrogate these processes, particularly in the context of recent advances in systems vaccinology; the potential biological and clinical impact of high maternal antibody titres on neonatal ontogeny and subsequent infant vaccine responses; and key vaccine- and host-related factors influencing the maternal-infant dyad across different environments. Finally, we outline important gaps in knowledge and suggest future avenues of research on this topic, proposing potential strategies to ensure optimal testing, delivery and implementation of maternal vaccination programs worldwide.
Collapse
Affiliation(s)
- Anja Saso
- Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Vaccines and Immunity Theme, MRC Unit The Gambia at LSHTM, Banjul, Gambia
| | - Beate Kampmann
- Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom
- Vaccines and Immunity Theme, MRC Unit The Gambia at LSHTM, Banjul, Gambia
| |
Collapse
|
21
|
Post AL, Li SH, Berry M, Itell H, Martinez DR, Xie G, Permar SR, Swamy GK, Fouda GG. Efficiency of placental transfer of vaccine-elicited antibodies relative to prenatal Tdap vaccination status. Vaccine 2020; 38:4869-4876. [PMID: 32482459 DOI: 10.1016/j.vaccine.2020.05.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 03/19/2020] [Accepted: 05/13/2020] [Indexed: 12/27/2022]
Abstract
Administration of vaccines during pregnancy provides maternal protection against infectious diseases. This protection is extended to their infants during the first months of life, as pathogen-specific antibodies formed in response to maternal vaccination are transferred across the placenta to the fetus. Notably, Tdap (tetanus-diphtheria-acellular pertussis) vaccination booster is routinely administered to pregnant women both to prevent neonatal tetanus and to ensure that infants have protective levels of pertussis antibodies until they are able to establish their own vaccine-induced levels. Whether infant protection through maternal immunization is merely due to an increase in maternal antibody levels or whether maternal immunization enhances the transfer of vaccine-specific antibodies is unclear. Moreover, the potential impact of prenatal vaccinations on the transplacental transfer of other antibodies, such as antibodies raised as a result of infections or other vaccines administered prior to pregnancy, has not been studied. The goal of this study was to define the impact of maternal vaccination on IgG transplacental transfer efficiency. We analyzed antigen-specific antibody populations and IgG subclass distribution in maternal and cord blood samples from 58 mother-infant pairs. All women received the seasonal inactivated influenza vaccine during pregnancy and 25 women received the Tdap vaccine during the second or third trimester of gestation. Prenatal Tdap vaccination did not impact the efficiency of IgG transplacental transfer; however, it was associated with higher maternal and infant vaccine-elicited Tdap-specific antibody levels, and with a higher proportion of infants with protective levels of antibodies, especially against diphtheria. There was also no difference in the IgG transplacental transfer rate of antibodies against non-Tdap vaccines between the two groups of women. Our results confirm previous reports demonstrating the benefits of prenatal Tdap immunization and indicate that this strategy does not impede the transplacental transfer of other antibodies that are also important for infant protection.
Collapse
Affiliation(s)
- Annalisa L Post
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC, USA
| | - Shuk Hang Li
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Madison Berry
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Hannah Itell
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - David R Martinez
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Guanhua Xie
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA
| | - Sallie R Permar
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA; Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Geeta K Swamy
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC, USA
| | - Genevieve G Fouda
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA; Department of Pediatrics, Duke University Medical Center, Durham, NC, USA.
| |
Collapse
|
22
|
Zhou S, Greene CM, Song Y, Zhang R, Rodewald LE, Feng L, Millman AJ. Review of the status and challenges associated with increasing influenza vaccination coverage among pregnant women in China. Hum Vaccin Immunother 2020; 16:602-611. [PMID: 31589548 DOI: 10.1080/21645515.2019.1664230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Influenza vaccination coverage in pregnant women in China remains low. In this review, we first provide an overview of the evidence for the use of influenza vaccination during pregnancy. Second, we discuss influenza vaccination policy and barriers to increased seasonal influenza vaccination coverage in pregnant women in China. Third, we provide case studies of successes and challenges of programs for increasing seasonal influenza vaccination in pregnant women from other parts of Asia with lessons learned for China. Finally, we assess opportunities and challenges for increasing influenza vaccination coverage among pregnant women in China.
Collapse
Affiliation(s)
- Suizan Zhou
- Influenza Division, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Carolyn M Greene
- Influenza Division, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Ying Song
- Influenza Division, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Ran Zhang
- Influenza Division, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Lance E Rodewald
- National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Luzhao Feng
- Key Laboratory of Surveillance and Early-warning on Infectious Disease, Division of Infectious Disease, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Alexander J Millman
- Influenza Division, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USA
| |
Collapse
|
23
|
Sompagdee N, Anuwutnavin S, Phongsamart W, Senawong S, Umrod P, Robkhonburi A. Seroprevalence of Bordetella pertussis antibodies and anti-pertussis antibody response after a single dose of reduced-antigen combined diphtheria, tetanus, and acellular pertussis vaccine (Tdap) in pregnant Thai women. Vaccine 2020; 38:2725-2733. [PMID: 32070680 DOI: 10.1016/j.vaccine.2020.01.074] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 01/06/2020] [Accepted: 01/23/2020] [Indexed: 11/17/2022]
Abstract
BACKGROUND Maternal immunization with tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis vaccine (Tdap) has recently been implemented to prevent infant pertussis. Tdap is still not routinely recommended in Thailand, and there are limited data to support or challenge this strategy. OBJECTIVES The primary aim was to determine the seroprevalence of anti-pertussis toxin antibodies (anti-PT IgG) among pregnant Thai women. The secondary aims were to evaluate antibodies response after Tdap vaccination between seronegative and seropositive mothers and to compare the different antibody titers at delivery among seropositive mothers who received Tdap to those who received tetanus-diphtheria vaccine (Td). METHODS This randomized clinical trial was conducted during April 2018 to April 2019 at Siriraj Hospital, Bangkok, Thailand. A total of 129 pregnant women were included. Paired blood samples for anti-PT IgG levels were obtained during the first antenatal visit and at delivery. A baseline cut-off value of <5 IU/ml indicated seronegativity. There were 29 exclusions from the original 129 enrollment. All seronegative participants (n = 69) received Tdap, while the seropositive group were randomized 1:1 to receive either Tdap (n = 18) or Td (n = 13) during 27-36 weeks' gestation. The antibody levels from both sera were compared between groups. RESULTS The seroprevalence of maternal anti-PT IgG was 33.3% (43/129). There was no significant difference in the increment of antibody levels after Tdap vaccination between the seronegative and seropositive groups (30.2 vs. 42 IU/ml; p = 0.183). Among seropositive groups, all Tdap recipients had increased antibody titers at delivery, while all Td recipients showed waning of immunity throughout gestation. (42 IU/ml vs. -7.4 IU/ml; p < 0.001). CONCLUSION Most pregnant Thai women have seronegative against pertussis. Most seropositive mothers had initial low antibody titers and their immunity significantly decreased before delivery. Our findings highlight the need for universal pertussis immunization in pregnancy regardless of individual baseline immunity.
Collapse
Affiliation(s)
- Nalat Sompagdee
- Department of Obstetrics and Gynaecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sanitra Anuwutnavin
- Department of Obstetrics and Gynaecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
| | - Wanatpreeya Phongsamart
- Division of Infectious Diseases, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sansnee Senawong
- Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pinklow Umrod
- Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Amporn Robkhonburi
- Department of Obstetrics and Gynaecology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| |
Collapse
|
24
|
Maertens K, Orije MRP, Van Damme P, Leuridan E. Vaccination during pregnancy: current and possible future recommendations. Eur J Pediatr 2020; 179:235-242. [PMID: 31912233 PMCID: PMC7222942 DOI: 10.1007/s00431-019-03563-w] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 11/15/2019] [Accepted: 12/23/2019] [Indexed: 11/15/2022]
Abstract
Immunizing pregnant women to protect the mother, fetus and infant from infection has increasingly been used over the last decade. Protection against infectious diseases in neonates is mainly provided by maternal antibodies transferred from mother to infant during pregnancy through transplacental transport or after delivery via breastfeeding. Both the transplacental- and breast milk-derived maternal antibodies function as the primary source of protection against infectious diseases in neonates during the first vulnerable weeks of life. During recent infectious disease outbreaks (influenza, pertussis, Zika…) and for other infectious diseases (CMV, GBS…), pregnant women are increasingly identified as an important target for vaccination. For some of these diseases, vaccines are already on the market, and recommended during pregnancy. For others, vaccines are currently under development; furthermore, some are even specifically designed to be administered during pregnancy.Conclusion: This review article provides an overview on the rationale and main mechanism of the maternal vaccination strategy and gives a summary about the current and possible future recommendations for maternal vaccination.What is Known:• Maternal vaccination has a far-reaching potential in the protection of both women and offspring.• Currently, tetanus, pertussis and influenza vaccination during pregnancy is recommended in some countries. Several new vaccines specifically designed for use in pregnancy are currently under development.What is New:• Review providing a timely overview of the rationale and main mechanisms of the maternal vaccination strategy• Up-to-date summary of the current and possible future recommendations for maternal vaccination.
Collapse
Affiliation(s)
- Kirsten Maertens
- Centre for the Evaluation of Vaccination, Vaccine & Infectious Diseases Institute, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium.
| | - Marjolein Rozemarie Paulien Orije
- grid.5284.b0000 0001 0790 3681Centre for the Evaluation of Vaccination, Vaccine & Infectious Diseases Institute, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Pierre Van Damme
- grid.5284.b0000 0001 0790 3681Centre for the Evaluation of Vaccination, Vaccine & Infectious Diseases Institute, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Elke Leuridan
- grid.5284.b0000 0001 0790 3681Centre for the Evaluation of Vaccination, Vaccine & Infectious Diseases Institute, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| |
Collapse
|
25
|
Engmann C, Fleming JA, Khan S, Innis BL, Smith JM, Hombach J, Sobanjo-ter Meulen A. Closer and closer? Maternal immunization: current promise, future horizons. J Perinatol 2020; 40:844-857. [PMID: 32341454 PMCID: PMC7223555 DOI: 10.1038/s41372-020-0668-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 12/16/2022]
Abstract
This state-of-the art manuscript highlights our current understanding of maternal immunization-the practice of vaccinating pregnant women to confer protection on them as well as on their young infants, and thereby reduce vaccine-preventable morbidity and mortality. Advances in our understanding of the immunologic processes that undergird a normal pregnancy, studies from vaccines currently available and recommended for pregnant women, and vaccines for administration in special situations are beginning to build the case for safe scale-up of maternal immunization. In addition to well-known diseases, new diseases are emerging which pose threats. Several new vaccines are currently under development and increasingly include pregnant women. In this manuscript, targeted at clinicians, vaccinologists, scientists, public health practitioners, and policymakers, we also outline key considerations around maternal immunization introduction and delivery, discuss noninfectious horizons for maternal immunization, and provide a framework for the clinician faced with immunizing a pregnant woman.
Collapse
Affiliation(s)
- Cyril Engmann
- Maternal, Newborn, Child Health and Nutrition, PATH, Seattle, WA, USA. .,Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA. .,Department of Global Health, University of Washington School of Public Health, Seattle, WA, USA.
| | - Jessica A. Fleming
- 0000 0000 8940 7771grid.415269.dCenter for Vaccine Innovation and Access, PATH, Seattle, WA USA
| | - Sadaf Khan
- 0000 0000 8940 7771grid.415269.dMaternal, Newborn, Child Health and Nutrition, PATH, Seattle, WA USA
| | - Bruce L. Innis
- 0000 0000 8940 7771grid.415269.dCenter for Vaccine Innovation and Access, PATH, Seattle, WA USA
| | - Jeffrey M. Smith
- 0000 0000 8990 8592grid.418309.7Maternal, Newborn and Child Health, Bill & Melinda Gates Foundation, Seattle, WA USA
| | - Joachim Hombach
- 0000000121633745grid.3575.4Immunization, Vaccines and Biologicals, World Health Organization, Geneva, Switzerland
| | - Ajoke Sobanjo-ter Meulen
- 0000 0000 8990 8592grid.418309.7Maternal Immunization and Pneumonia, Bill & Melinda Gates Foundation, Seattle, WA USA
| |
Collapse
|
26
|
de Alwis R, Tu LTP, Quynh NLT, Thompson CN, Anders KL, Van Thuy NT, Hieu NT, Vi LL, Chau NVV, Duong VT, Chau TTH, Tuyen HT, Nga TVT, Minh PV, Tan TV, Thu TNH, Nhu TDH, Thwaites GE, Simmons C, Baker S. The Role of Maternally Acquired Antibody in Providing Protective Immunity Against Nontyphoidal Salmonella in Urban Vietnamese Infants: A Birth Cohort Study. J Infect Dis 2019; 219:295-304. [PMID: 30321351 PMCID: PMC6306017 DOI: 10.1093/infdis/jiy501] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 08/16/2018] [Indexed: 11/24/2022] Open
Abstract
Background Nontyphoidal Salmonella (NTS) organisms are a major cause of gastroenteritis and bacteremia, but little is known about maternally acquired immunity and natural exposure in infant populations residing in areas where NTS disease is highly endemic. Methods We recruited 503 pregnant mothers and their infants (following delivery) from urban areas in Vietnam and followed infants until they were 1 year old. Exposure to the dominant NTS serovars, Salmonella enterica serovars Typhimurium and Enteritidis, were assessed using lipopolysaccharide (LPS) O antigen–specific antibodies. Antibody dynamics, the role of maternally acquired antibodies, and NTS seroincidence rates were modeled using multivariate linear risk factor models and generalized additive mixed-effect models. Results Transplacental transfer of NTS LPS–specific maternal antibodies to infants was highly efficient. Waning of transplacentally acquired NTS LPS–specific antibodies at 4 months of age left infants susceptible to Salmonella organisms, after which they began to seroconvert. High seroincidences of S. Typhimurium and S. Enteritidis LPS were observed, and infants born with higher anti-LPS titers had greater plasma bactericidal activity and longer protection from seroconversion. Conclusions Although Vietnamese infants have extensive exposure to NTS, maternally acquired antibodies appear to play a protective role against NTS infections during early infancy. These findings suggest that prenatal immunization may be an appropriate strategy to protect vulnerable infants from NTS disease.
Collapse
Affiliation(s)
- Ruklanthi de Alwis
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.,Centre for Tropical Medicine, Nuffield Department of Clinical Medicine, Oxford University, Oxford, United Kingdom.,Program in Emerging Infectious Diseases, Duke University-National University of Singapore (Duke-NUS) Medical School, Singapore.,Viral Research and Experimental Medicine Centre, SingHealth Duke-NUS Academic Medical Centre, Singapore
| | - Le Thi Phuong Tu
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam
| | - Nhi Le Thi Quynh
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam
| | - Corinne N Thompson
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.,Centre for Tropical Medicine, Nuffield Department of Clinical Medicine, Oxford University, Oxford, United Kingdom.,London School of Hygiene and Tropical Medicine, London, United Kingdom
| | | | - Nguyen Thi Van Thuy
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam
| | | | - Lu Lan Vi
- Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam
| | | | - Vu Thuy Duong
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam
| | - Tran Thi Hong Chau
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam
| | - Ha Thanh Tuyen
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam
| | - Tran Vu Thieu Nga
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam
| | - Pham Van Minh
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam
| | - Trinh Van Tan
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam
| | - Trang Nguyen Hoang Thu
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam
| | - Tran Do Hoang Nhu
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam
| | - Guy E Thwaites
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.,Centre for Tropical Medicine, Nuffield Department of Clinical Medicine, Oxford University, Oxford, United Kingdom
| | - Cameron Simmons
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.,Centre for Tropical Medicine, Nuffield Department of Clinical Medicine, Oxford University, Oxford, United Kingdom.,Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia
| | - Stephen Baker
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.,Centre for Tropical Medicine, Nuffield Department of Clinical Medicine, Oxford University, Oxford, United Kingdom.,Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| |
Collapse
|
27
|
Choi MJ, Noh JY, Jang AY, Cheong HJ, Kim WJ, Song DJ, Cho GJ, Oh MJ, Zhi Y, Seo HS, Song JY. Age-stratified analysis of serotype-specific baseline immunity against group B streptococcus. Hum Vaccin Immunother 2019; 16:1338-1344. [PMID: 31687869 DOI: 10.1080/21645515.2019.1688036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Group B streptococcus (GBS) vaccines are currently under development. Data on the natural immunity in diverse age groups will aid establishing the GBS immunization policy. In this study, thirty serum samples were collected from three age groups (neonates/infants, pregnant women, and the elderly) between August 2016 and July 2017. Serotype-specific opsonophagocytic activity (OPA) was assessed using a GBS multiplex opsonophagocytic killing assay (MOPA) against serotypes Ia, III, and V. The mean OPA titers for serotype Ia of the three age groups were not significantly different (p = .156), but tended to be lower in neonates/infants (mean ± standard deviation, 137 ± 278). For serotype III and V, the mean OPA titer of neonates/infants (338 ± 623 and 161 ± 445, respectively) was significantly lower than that of pregnant women (1377 ± 1167 and 9414 ± 6394) and the elderly (1350 ± 1741 and 3669 ± 5597) (p = .002). In conclusion, the lower levels of OPA titers against all tested serotypes in neonates/infants, despite high maternal titers, indicates that intrapartum GBS vaccinations may be required for efficient placental transfer of serotype-specific GBS antibodies with high avidity.
Collapse
Affiliation(s)
- Min Joo Choi
- Department of Internal Medicine, International St. Mary's Hospital, Catholic Kwandong University College of Medicine , Incheon, Korea
| | - Ji Yun Noh
- Department of Internal Medicine, Korea University College of Medicine , Seoul, Republic of Korea
| | - A-Yeung Jang
- Department of Internal Medicine, Korea University College of Medicine , Seoul, Republic of Korea
| | - Hee Jin Cheong
- Department of Internal Medicine, Korea University College of Medicine , Seoul, Republic of Korea
| | - Woo Joo Kim
- Department of Internal Medicine, Korea University College of Medicine , Seoul, Republic of Korea
| | - Dae Jin Song
- Department of Pediatrics, Korea University College of Medicine , Seoul, Republic of Korea
| | - Geum Joon Cho
- Department of Obstetrics and Gynecology, Korea University College of Medicine , Seoul, Republic of Korea
| | - Min Jeong Oh
- Department of Obstetrics and Gynecology, Korea University College of Medicine , Seoul, Republic of Korea
| | - Yong Zhi
- Biotechnology Division, Korea Atomic Energy Research Institute , Jeongeup, Republic of Korea.,Department of Radiation Biotechnology and Applied Radioisotope Science, University of Science and Technology , Daejeon, Republic of Korea
| | - Ho Seong Seo
- Biotechnology Division, Korea Atomic Energy Research Institute , Jeongeup, Republic of Korea.,Department of Radiation Biotechnology and Applied Radioisotope Science, University of Science and Technology , Daejeon, Republic of Korea
| | - Joon Young Song
- Department of Internal Medicine, Korea University College of Medicine , Seoul, Republic of Korea
| |
Collapse
|
28
|
Regan AK, Håberg SE, Fell DB. Current Perspectives on Maternal Influenza Immunization. CURRENT TROPICAL MEDICINE REPORTS 2019. [DOI: 10.1007/s40475-019-00188-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
29
|
Vaz-de-Lima LRA, Sato HK, Fernandes EG, Sato APS, Pawloski LC, Tondella ML, de Brito CA, Luna EJA, Carvalhanas TRMP, de Castilho EA. Association between the timing of maternal vaccination and newborns' anti-pertussis toxin antibody levels. Vaccine 2019; 37:5474-5480. [PMID: 31153689 DOI: 10.1016/j.vaccine.2019.04.079] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 04/03/2019] [Accepted: 04/25/2019] [Indexed: 11/24/2022]
Abstract
BACKGROUND Pertussis remains an important global public health concern, despite the presence of extensive immunization programs. Incidence and severity of pertussis are typically higher in neonates and young infants. As a strategy to protect these young infants, maternal vaccination with Tdap (tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis) has been recommended in Brazil. The objective of this study was to evaluate the effects of Tdap vaccination during pregnancy on the anti-pertussis toxin (PT) IgG response in mothers and their infants at birth. MATERIAL AND METHODS Maternal and cord blood samples were collected from vaccinated (n = 243) and unvaccinated (n = 75) pregnant women, at the time of delivery, from July 2015 to August 2016 in São Paulo, Brazil. Anti-PT IgG antibodies were quantified by Enzyme-Linked Immunosorbent Assay (ELISA) and geometric mean concentrations (GMC) were calculated. Relationship between timing of vaccination and antibody concentrations were evaluated. RESULTS Maternal and cord blood GMCs among the vaccinated group were 5.4 and 5.6 fold higher [66.5 International Units (IU)/mL and 89.8 IU/mL] compared to the unvaccinated group (12.4 IU/mL and 16.1 IU/mL), respectively (p < 0.001). Higher anti-PT IgG GMCs were observed when vaccination occurred ≥60 days before delivery compared to <60 days, suggesting that vaccination early in the third trimester may be more effective than later in pregnancy. CONCLUSION Tdap maternal vaccination results in significantly higher anti-PT IgG in newborn infants and supports the current recommendation of the Brazilian Immunization Program.
Collapse
Affiliation(s)
| | - Helena Keico Sato
- Divisão de Imunização, Centro de Vigilância Epidemiológica Prof. Alexandre Vranjac, Coordenadoria de Controle de Doenças da Secretaria de Estado da Saúde de São Paulo, Brazil
| | - Eder Gatti Fernandes
- Divisão de Imunização, Centro de Vigilância Epidemiológica Prof. Alexandre Vranjac, Coordenadoria de Controle de Doenças da Secretaria de Estado da Saúde de São Paulo, Brazil
| | - Ana Paula Sayuri Sato
- Departamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo, Brazil
| | - Lucia C Pawloski
- Pertussis and Diphtheria Laboratory, Division of Bacterial Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, United States
| | - Maria Lucia Tondella
- Pertussis and Diphtheria Laboratory, Division of Bacterial Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, United States
| | | | | | - Telma Regina M P Carvalhanas
- Divisão de Doenças de Transmissão Respiratória, Centro de Vigilância Epidemiológica Prof. Alexandre Vranjac, Coordenadoria de Controle de Doenças da Secretaria de Estado da Saúde SP, Brazil
| | - Euclides A de Castilho
- Departamento de Medicina Preventiva, Faculdade de Medicina da Universidade de São Paulo, Brazil
| | | |
Collapse
|
30
|
Serocorrelates of protection against infant group B streptococcus disease. THE LANCET. INFECTIOUS DISEASES 2019; 19:e162-e171. [PMID: 30683467 DOI: 10.1016/s1473-3099(18)30659-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 10/20/2018] [Accepted: 10/24/2018] [Indexed: 12/12/2022]
Abstract
Group B streptococcus (GBS) is a leading cause of young infant mortality and morbidity globally, with vaccines being developed for over four decades but none licensed to date. A serocorrelate of protection against invasive disease in young infants is being considered to facilitate vaccine early licensure, followed by demonstration of efficacy assessed postlicensure. In this Review, we synthesise the available scientific evidence to define an immune correlate associated with GBS disease risk reduction on the basis of studies of natural infection. We summarise studies that have investigated GBS serum anticapsular or anti-protein antibodies, and studies measuring the association between antibody function and disease risk reduction. We highlight how knowledge on the development of correlates of protection from existing vaccines could be harnessed to facilitate GBS vaccine development. These lessons include aggregation of serocorrelates of protection for individual serotypes, understanding the relationship between immunity derived from natural exposure of adults and vaccine-induced immunity, or using extrapolation of protection from in-vitro immunoassay results. We also highlight key considerations for the assessment of the role of antibodies to derive a serocorrelate of risk reduction in future seroepidemiological studies of GBS disease.
Collapse
|
31
|
Wanlapakorn N, Maertens K, Chaithongwongwatthana S, Srimuan D, Suratannon N, Vongpunsawad S, Tran TMP, Hens N, Van Damme P, Locht C, Poovorawan Y, Leuridan E. Assessing the reactogenicity of Tdap vaccine administered during pregnancy and antibodies to Bordetella pertussis antigens in maternal and cord sera of Thai women. Vaccine 2018; 36:1453-1459. [PMID: 29426663 DOI: 10.1016/j.vaccine.2018.01.059] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 01/17/2018] [Accepted: 01/23/2018] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Pregnant Thai women have low antibody titers against B. pertussis antigens, which coincide with an increasing incidence of pertussis among Thai infants. Thus, there exists a potential benefit of a booster dose of tetanus- diphtheria-acellular pertussis (Tdap) vaccine administered during pregnancy. Here, we report the vaccine reactogenicity profile and birth outcomes in Tdap-vaccinated pregnant women who have or have not had prior immunization with tetanus vaccine, and the IgG levels to B. pertussis antigens in maternal and cord sera at delivery. MATERIALS AND METHODS Pregnant women (N = 370) aged 18-40 years were administered the Tdap vaccine (Boostrix®, GlaxoSmithKline, Rixensart, Belgium) at 26-36 weeks gestation. Adverse events following vaccination were identified by follow-up telephone call and medical record review. IgG against pertussis toxin (anti-PT), filamentous hemagglutinin (anti-FHA) and pertactin (anti-PRN) in both maternal and umbilical cord blood obtained at delivery were quantitatively evaluated using enzyme-linked immunosorbent assay (EUROIMMUN®, Lübeck, Germany). RESULTS There was no reported increase in the severity or duration of adverse events associated with the administration of an extra tetanus-containing vaccine within the previous five years (N = 181) or multiple doses of tetanus-containing vaccines during the current pregnancy (N = 98). Vaccination at least eight weeks prior to delivery resulted in high antibody titers to all B. pertussis antigens studied. CONCLUSIONS The reactogenicity of Tdap vaccine administered during pregnancy was not affected by prior tetanus toxoid immunization. High transplacental antibody against B. pertussis antigens in the cord blood provides evidence of antibody transfer and should thus help to protect newborns from pertussis during early life.
Collapse
Affiliation(s)
- Nasamon Wanlapakorn
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Joint PhD program in Biomedical Sciences and Biotechnology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Kirsten Maertens
- Center for the Evaluation of Vaccination, Vaccine & Infectious Diseases Institute, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | | | - Donchida Srimuan
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Narissara Suratannon
- Division of Allergy and Immunology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Sompong Vongpunsawad
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Thao Mai Phuong Tran
- Interuniversity Institute for Biostatistics and Statistical Bioinformatics, Hasselt University, Belgium
| | - Niel Hens
- Interuniversity Institute for Biostatistics and Statistical Bioinformatics, Hasselt University, Belgium; Centre for Health Economics Research & Modelling Infectious Diseases, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - Pierre Van Damme
- Center for the Evaluation of Vaccination, Vaccine & Infectious Diseases Institute, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Camille Locht
- Univ. Lille, CNRS, INSERM, Institut Pasteur de Lille, U1019 - UMR8204, Center for Infection and Immunity of Lille, France
| | - Yong Poovorawan
- Center of Excellence in Clinical Virology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
| | - Elke Leuridan
- Center for the Evaluation of Vaccination, Vaccine & Infectious Diseases Institute, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| |
Collapse
|
32
|
Effect of maternal immunization against pertussis in Medellin and the metropolitan area, Colombia, 2016-2017. Vaccine 2018; 36:3984-3991. [PMID: 29789240 DOI: 10.1016/j.vaccine.2018.05.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 04/11/2018] [Accepted: 05/04/2018] [Indexed: 11/20/2022]
Abstract
BACKGROUND In 2013, pertussis immunization (Tdap) for pregnant women was implemented in Colombia to protect newborns in response to increased pertussis incidence. OBJECTIVE To assess the effect of Tdap maternal immunization on the concentration of mother/umbilical cord antibodies and the occurrence of pertussis in infants during their first six months of life. METHODS A cohort study in eight randomly selected hospitals in Medellin and metropolitan area of Antioquia, Colombia was conducted in 2015-2016. IgG PT antibody levels in paired maternal and umbilical cord sera were measured from 805 mothers immunized recruited during labor and 200 mothers recruited during the prenatal care before immunization and followed until delivery. Antibodies were analyzed by commercial ELISA kits. 896 infants were followed to detect acute respiratory infections and paroxysms of coughing, inspiratory whoop, apnea, cyanosis or post-tussive vomiting. For laboratory confirmation, B. pertussis- specific real time PCR was performed. RESULTS We observed a high prevalence of titers >100 IU/mL (mother: 18.40% [95% CI 16-21%]; umbilical cord: 23.1% [95% CI 19.2-27.4%]), positive correlation of umbilical cord and maternal antibodies, higher antibody concentration in vaccinated than in non-vaccinated mothers and significant difference in antibody levels before and after vaccination (Wilcoxon test p = 0.000). The trans placental transport ratio was higher if the mother was vaccinated between 26 and 30 weeks of pregnancy and maximum eight weeks before delivery. Two cases of pertussis were confirmed in infants (incidence of 1.99 per 1000). CONCLUSION The expected effect of Tdap maternal vaccination against pertussis was observed.
Collapse
|
33
|
Bergin N, Murtagh J, Philip RK. Maternal Vaccination as an Essential Component of Life-Course Immunization and Its Contribution to Preventive Neonatology. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:E847. [PMID: 29693575 PMCID: PMC5981886 DOI: 10.3390/ijerph15050847] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/13/2018] [Accepted: 04/21/2018] [Indexed: 12/16/2022]
Abstract
Maternal immunisation schedules are increasingly coming under the spotlight as part of the development of lifetime immunisation programmes for the role that they play in improving maternal, foetal, and neonatal health. Maternally-acquired antibodies are critical in protecting infants during the first months of their lives. Maternal immunisation was previously overlooked owing to concerns regarding vaccinations in this untested and high-risk population but is now acknowledged for its potential impact on the outcomes in many domains of foetal and neonatal health, aside from its maternal benefits. This article highlights the role that maternal immunisation may play in reducing infections in preterm and term infants. It explores the barriers to antenatal vaccinations and the optimisation of the immunisation uptake. This review also probes the part that maternal immunisation may hold in the reduction of perinatal antimicrobial resistance and the prevention of non-infectious diseases. Both healthcare providers and expectant mothers should continue to be educated on the importance and safety of the appropriate immunizations during pregnancy. Maternal vaccination merits its deserved priority in a life-course immunization approach and it is perhaps the only immunization whereby two generations benefit directly from a single input. We outline the current recommendations for antenatal vaccinations and highlight the potential advances in the field contributing to “preventive neonatology”.
Collapse
Affiliation(s)
- Naomi Bergin
- Division of Neonatology, Department of Paediatrics, University Maternity Hospital Limerick (UMHL), Limerick V94 C566, Ireland.
| | - Janice Murtagh
- MSD Ireland Ltd., South County Business Park, Leopardstown, Dublin D18 X5K7, Ireland.
| | - Roy K Philip
- Division of Neonatology, Department of Paediatrics, University Maternity Hospital Limerick (UMHL), Limerick V94 C566, Ireland.
| |
Collapse
|
34
|
No 357 – Immunisation pendant la grossesse. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2018; 40:490-502. [DOI: 10.1016/j.jogc.2018.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
35
|
Abstract
OBJECTIVE To review the evidence and provide recommendations on immunization in pregnancy. OUTCOMES Outcomes evaluated include effectiveness of immunization and risks and benefits for mother and fetus. EVIDENCE The Medline and Cochrane databases were searched for articles published up to January 2017 on the topic of immunization in pregnancy. VALUES The evidence obtained was reviewed and evaluated by the Infectious Diseases Committee of the SOGC under the leadership of the principal authors, and recommendations were made according to guidelines developed by the Canadian Task Force on Preventive Health Care (Table 1). BENEFITS, HARMS, AND COSTS Implementation of the recommendations in this guideline should result in more appropriate immunization of pregnant and breastfeeding women, decreased risk of contraindicated immunization, and better disease prevention. RECOMMENDATIONS
Collapse
|
36
|
Vermillion MS, Klein SL. Pregnancy and infection: using disease pathogenesis to inform vaccine strategy. NPJ Vaccines 2018; 3:6. [PMID: 29423318 PMCID: PMC5794984 DOI: 10.1038/s41541-017-0042-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 11/29/2017] [Accepted: 12/11/2017] [Indexed: 02/03/2023] Open
Abstract
Vaccination is the mainstay of preventative medicine for many infectious diseases. Pregnant women, unborn fetuses, and neonates represent three at-risk populations that can be simultaneously protected by strategic vaccination protocols. Because the pathogenesis of different infectious microbes varies based on tissue tropism, timing of infection, and host susceptibility, the goals of immunization are not uniform across all vaccines. Mechanistic understanding of infectious disease pathogenesis and immune responses is therefore essential to inform vaccine design and the implementation of appropriate immunization protocols that optimize protection of pregnant women, fetuses, and neonates.
Collapse
Affiliation(s)
- Meghan S. Vermillion
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205 USA
- Department of Molecular and Comparative Pathobiology, The Johns Hopkins School of Medicine, Baltimore, MD 21205 USA
| | - Sabra L. Klein
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205 USA
| |
Collapse
|
37
|
|
38
|
Wilcox CR, Holder B, Jones CE. Factors Affecting the FcRn-Mediated Transplacental Transfer of Antibodies and Implications for Vaccination in Pregnancy. Front Immunol 2017; 8:1294. [PMID: 29163461 PMCID: PMC5671757 DOI: 10.3389/fimmu.2017.01294] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 09/26/2017] [Indexed: 11/30/2022] Open
Abstract
At birth, neonates are particularly vulnerable to infection and transplacental transfer of immunoglobulin G (IgG) from mother to fetus provides crucial protection in the first weeks of life. Transcytosis of IgG occurs via binding with the neonatal Fc receptor (FcRn) in the placental synctiotrophoblast. As maternal vaccination becomes an increasingly important strategy for the protection of young infants, improving our understanding of transplacental transfer and the factors that may affect this will become increasingly important, especially in low-income countries where the burden of morbidity and mortality is highest. This review highlights factors of relevance to maternal vaccination that may modulate placental transfer—IgG subclass, glycosylation of antibody, total maternal IgG concentration, maternal disease, infant gestational age, and birthweight—and outlines the conflicting evidence and questions that remain regarding the complexities of these relationships. Furthermore, the intricacies of the Ab–FcRn interaction remain poorly understood and models that may help address future research questions are described.
Collapse
Affiliation(s)
- Christopher R Wilcox
- National Institute of Health Research Wellcome Trust Clinical Research Facility, Southampton, United Kingdom
| | - Beth Holder
- Paediatrics Section, Division of Infectious Diseases, Centre for International Child Health, Imperial College London, London, United Kingdom
| | - Christine E Jones
- Faculty of Medicine, Institute for Life Sciences, University of Southampton, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| |
Collapse
|