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Taskou C, Sarantaki A, Georgakopoulou VΕ, Spyratos GA, Drossos PV, Daskalakis G, Beloukas A, Lykeridou A. Assessing the Presence of IgG Antibodies against Influenza Viruses in Neonates after Maternal Vaccination and Factors That May Affect the Transplacental Transfer. Diseases 2023; 11:166. [PMID: 37987278 PMCID: PMC10660699 DOI: 10.3390/diseases11040166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 11/01/2023] [Accepted: 11/07/2023] [Indexed: 11/22/2023] Open
Abstract
Special populations, particularly pregnant women, are uniquely susceptible to infectious diseases due to alterations in their immunological, respiratory, and cardiovascular systems during gestation. Influenza infections during the perinatal period have been associated with more severe maternal and perinatal outcomes, underscoring the critical importance of vaccination data for pregnant women. According to the World Health Organization (WHO), all pregnant women and those of childbearing age should receive the inactivated influenza vaccine, irrespective of their pregnancy stage. This study aimed to elucidate factors influencing neonatal antibody presence following maternal influenza vaccination. Conducted through convenience sampling in Athens, Greece, this study involved 78 pregnant women who received flu vaccinations. The participants completed questionnaires covering demographics, obstetric history, attitudes toward influenza vaccination, and knowledge about the influenza virus and pregnancy vaccination. Blood samples were collected from 83 neonates to assess IgG antibody presence. Five of the surveyed women had twin pregnancies. The statistical analysis employed IBM SPSS-Statistics version 26.0. This study revealed the presence of positive influenza A and B antibodies in neonates following maternal immunization. Furthermore, it identified factors such as the gestational week and timing of vaccination during pregnancy that influenced the transfer of antibodies from mother to fetus. These findings offer valuable insights for healthcare professionals to provide informed recommendations on influenza vaccination during pregnancy and empower expectant mothers to make informed decisions about the benefits of immunization.
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Affiliation(s)
- Chrysoula Taskou
- Midwifery Department, University of West Attica, 11521 Athens, Greece; (A.S.); (A.L.)
| | - Antigoni Sarantaki
- Midwifery Department, University of West Attica, 11521 Athens, Greece; (A.S.); (A.L.)
| | | | - Gerasimos A. Spyratos
- Biomedical Sciences Department, University of West Attica, 11521 Athens, Greece; (G.A.S.); (P.V.D.)
- Labogen S.A. Laboratories, 11143 Athens, Greece
| | - Panagiotis V. Drossos
- Biomedical Sciences Department, University of West Attica, 11521 Athens, Greece; (G.A.S.); (P.V.D.)
| | - Georgios Daskalakis
- 1st Department of Obstetrics and Gynecology, Alexandra Hospital, National and Kapodistrian University of Athens, 11528 Athens, Greece;
| | - Apostolos Beloukas
- Biomedical Sciences Department, University of West Attica, 11521 Athens, Greece; (G.A.S.); (P.V.D.)
- National AIDS Reference Centre of Southern Greece, Department of Public Health Policy, University of West Attica, 11521 Athens, Greece
| | - Aikaterini Lykeridou
- Midwifery Department, University of West Attica, 11521 Athens, Greece; (A.S.); (A.L.)
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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] [What about the content of this article? (0)] [Affiliation(s)] [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.
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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.
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