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Amaral E, Money D, Jamieson D, Pasupathy D, Aronoff D, Jacobsson B, Lizcano EIO. Vaccination during pregnancy: A golden opportunity to embrace. Int J Gynaecol Obstet 2023; 163:476-483. [PMID: 37417315 DOI: 10.1002/ijgo.14981] [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] [Indexed: 07/08/2023]
Abstract
Immunization strategies are part of routine pregnancy care to prevent infectious diseases in the mother, the fetus, and the newborn. Maternal immunization recommendations followed the recognition of the consequences of infectious diseases in pregnancy, including vertical transmission and perinatal consequences. The recent COVID-19 pandemic highlighted the issue of vaccination among pregnant individuals. Recommendations vary globally; however, Tdap, influenza, and, recently, COVID-19 vaccines are routinely recommended during pregnancy. There are several new maternal immunization products in the pipeline, including those directed against malaria, cytomegalovirus, Group B Streptococcus, herpes simplex virus, and respiratory syncytial virus. Important challenges must be addressed in all countries to guarantee that pregnant individuals and their babies receive the best care possible, including uptake of recommended immunizations by their entire target population groups. These challenges include disseminating appropriate data for vaccine recommendations and many others, such as ensuring stakeholder endorsement, achieving in-country distribution and administration, adequate vaccine supply, and a well-organized healthcare system, ideally offering the immunization free of charge. More recently, the hesitancy of pregnant women to receive immunizations highlights the relevance of cultural aspects and other contextual factors affecting vaccine uptake among pregnant individuals.
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Affiliation(s)
- Eliana Amaral
- Department of Obstetrics & Gynecology, University of Campinas, São Paulo, Brazil
| | - Deborah Money
- Department of Obstetrics & Gynecology, University of Vancouver, Vancouver, British Columbia, Canada
| | - Denise Jamieson
- Department of Gynecology & Obstetrics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Dharmintra Pasupathy
- Department of Maternal & Fetal Medicine, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - David Aronoff
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Bo Jacobsson
- Department of Obstetrics & Gynecology, University of Gothenburg, Gothenburg, Sweden
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Robinson C, Oberye J, van Boxmeer J, Albano JD, Tilson H, Scialli A, Vanchiere JA, Ides E, Sawlwin D, Hohenboken M, Edelman J. A Prospective Cohort Study on Pregnancy Outcomes of Persons Immunized with a Seasonal Quadrivalent Inactivated Influenza Vaccine during Pregnancy. Vaccines (Basel) 2022; 10:vaccines10101577. [PMID: 36298442 PMCID: PMC9611467 DOI: 10.3390/vaccines10101577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/05/2022] [Accepted: 09/16/2022] [Indexed: 11/16/2022] Open
Abstract
This US-based, prospective observational cohort study evaluated the safety of a quadrivalent inactivated influenza vaccine (IIV4; Afluria Quadrivalent) in pregnant persons immunized over four influenza seasons between 2017 and 2021. Pregnancy outcomes included live birth, stillbirth, spontaneous abortion, and elective termination. Infant events of interest were major congenital malformations (MCMs), preterm birth (<37 weeks gestational age), and low birth weight (LBW). Data were descriptive; prevalence point estimates were reported with 95% confidence intervals (CI). A total of 483 pregnant persons were given IIV4 and evaluated; 477 (98.8%) reported a live birth, and there were 2 stillbirths, 4 spontaneous abortions, and no elective terminations or maternal deaths. The prevalence rates of infant events were as follows: preterm birth, 7.2% (upper 95% CI, 9.6%); LBW, 5.4% (upper 95% CI, 7.4%); and MCMs, 0.8% (upper 95% CI, 1.9%). Point estimates and upper 95% CIs of the observed prevalence rates were lower than or similar to background prevalence in the general US population. Our findings suggest no evidence of a safety concern with vaccinating this group at high risk of influenza complications and are consistent with published data from databases and surveillance systems that monitor the safety of influenza vaccines in pregnant persons.
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Affiliation(s)
| | - Janine Oberye
- Seqirus Netherlands B.V., 1105 BJ Amsterdam, The Netherlands
- Correspondence:
| | | | | | - Hugh Tilson
- Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC 27599, USA
| | | | | | - Ellis Ides
- Seqirus Netherlands B.V., 1105 BJ Amsterdam, The Netherlands
| | - Daphne Sawlwin
- Seqirus Australia Pty Ltd., Parkville, VIC 3052, Australia
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Foo D, Sarna M, Pereira G, Moore HC, Regan AK. Maternal influenza vaccination and child mortality: Longitudinal, population-based linked cohort study. Vaccine 2022; 40:3732-3736. [PMID: 35606236 DOI: 10.1016/j.vaccine.2022.05.030] [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: 04/05/2022] [Revised: 05/02/2022] [Accepted: 05/09/2022] [Indexed: 10/18/2022]
Abstract
Influenza vaccination is recommended to protect mothers and their infants from influenza. Few studies have evaluated the association between maternal influenza vaccination and child mortality. We aimed to evaluate the association between in utero exposure to seasonal inactivated influenza vaccine (IIV) and mortality among young children. This longitudinal, population-based cohort study included 191,247 maternal-child pairs in Western Australia between April 2012 and December 2017. Maternal vaccine information was obtained from a state-wide antenatal vaccination database. Mortality was defined as a record of a death registration. We used Cox proportional hazard models, weighted by the inverse-probability of treatment (vaccination), to estimate the hazard ratio of child mortality associated with in utero exposure to seasonal IIV. This study found no association between in utero exposure to seasonal IIV and mortality through age five years.
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Affiliation(s)
- Damien Foo
- Curtin School of Population Health, Curtin University, Perth, Western Australia, Australia; Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, The University of Western Australia, Perth, Western Australia, Australia.
| | - Mohinder Sarna
- Curtin School of Population Health, Curtin University, Perth, Western Australia, Australia; Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, The University of Western Australia, Perth, Western Australia, Australia
| | - Gavin Pereira
- Curtin School of Population Health, Curtin University, Perth, Western Australia, Australia; Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway; enAble Institute, Curtin University, Perth, Western Australia, Australia
| | - Hannah C Moore
- Curtin School of Population Health, Curtin University, Perth, Western Australia, Australia; Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, The University of Western Australia, Perth, Western Australia, Australia
| | - Annette K Regan
- Curtin School of Population Health, Curtin University, Perth, Western Australia, Australia; Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, The University of Western Australia, Perth, Western Australia, Australia; School of Nursing and Health Professions, University of San Francisco, San Francisco, California, United States; Fielding School of Public Health, University of California Los Angeles, Los Angeles, California, United States
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