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Kyle, M.H.;  Dumitriu, D. Effects of in Utero SARS-CoV-2 Exposure on Newborn Health Outcomes. Encyclopedia. Available online: https://encyclopedia.pub/entry/40081 (accessed on 02 May 2024).
Kyle MH,  Dumitriu D. Effects of in Utero SARS-CoV-2 Exposure on Newborn Health Outcomes. Encyclopedia. Available at: https://encyclopedia.pub/entry/40081. Accessed May 02, 2024.
Kyle, Margaret H., Dani Dumitriu. "Effects of in Utero SARS-CoV-2 Exposure on Newborn Health Outcomes" Encyclopedia, https://encyclopedia.pub/entry/40081 (accessed May 02, 2024).
Kyle, M.H., & Dumitriu, D. (2023, January 12). Effects of in Utero SARS-CoV-2 Exposure on Newborn Health Outcomes. In Encyclopedia. https://encyclopedia.pub/entry/40081
Kyle, Margaret H. and Dani Dumitriu. "Effects of in Utero SARS-CoV-2 Exposure on Newborn Health Outcomes." Encyclopedia. Web. 12 January, 2023.
Peer Reviewed
Effects of in Utero SARS-CoV-2 Exposure on Newborn Health Outcomes
This is a peer-reviewed entry published in Encyclopedia Journal, full entry can be found at 10.3390/encyclopedia3010002

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has infected over 600 million people worldwide, including millions of pregnant women. While newborns exposed to other viruses in utero are sometimes at high risk for vertical transmission, a substantial body of literature since early 2020 has demonstrated that vertical transmission of SARS-CoV-2 from infected mother to neonate is rare, and that newborns who do become infected with SARS-CoV-2 generally have favorable outcomes. In this review, the authors evaluate the existing literature on vertical transmission of SARS-CoV-2 and its potential mechanisms and discuss short- and long-term health outcomes in newborns who were exposed to SARS-CoV-2 in utero. The authors conclude that vertical transmission and adverse neonatal and infant/child outcomes are unlikely, but that neonates exposed to prenatal maternal SARS-CoV-2 infection may be at slightly higher risk for preterm birth, possibly related to increased risk of severe COVID-19 disease in pregnant women, placental changes, or infection timing. Ultimately, the need for additional and longer-term follow-up data in this population is highlighted.

COVID-19 SARS-CoV-2 pregnancy newborn neonatal vertical transmission placenta neurodevelopment
Two and a half years into the COVID-19 pandemic, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to spread worldwide. As of this writing (12 September 2022), there have been over 600 million cases globally, with over four million new cases reported in the most recent World Health Organization report for the week of 29 August 2022 [1]. The global health burden of COVID-19 disease has affected the entire world, but certain populations, including pregnant women and newborns, have been considered particularly vulnerable to potential adverse outcomes following SARS-CoV-2 infection. One fear among researchers and clinicians early on was the possibility of vertical transmission of SARS-CoV-2 from infected pregnant women to their neonates, but a large body of literature has demonstrated that this occurs in a small proportion of neonates, generally less than 5% [2][3][4][5][6][7]. Further, rates of neonatal infection do not appear to be increased when newborns breastfeed, room-in, or partake in skin-to-skin care with their mothers [5][6][7]. Potential mechanisms underlying rare cases of vertical transmission remain unclear, but a prevailing theory is transplacental transmission. Additionally, SARS-CoV-2 has been linked to placental alterations with the capacity to impact newborn outcomes even in the absence of placental infection [8][9][10]. Available data suggest that newborns exposed to maternal SARS-CoV-2 infection in utero are generally healthy, but that they may be at increased risk of premature birth [6][11][12][13][14]. The literature on long-term outcomes in these newborns is—by definition—limited. Here, the authors review the present data on vertical transmission of SARS-CoV-2 and its potential mechanisms, consider the role of the placenta in neonatal outcomes, and survey data on short- and long-term outcomes in neonates exposed to maternal SARS-CoV-2 infection in utero (Table S1).

References

  1. World Health Organization. COVID-19 Weekly Epidemiological Update; World Health Organization: Geneva, Switzerland, 2022.
  2. Kotlyar, A.M.; Grechukhina, O.; Chen, A.; Popkhadze, S.; Grimshaw, A.; Tal, O.; Taylor, H.S.; Tal, R. Vertical transmission of coronavirus disease 2019: A systematic review and meta-analysis. Am. J. Obstet. Gynecol. 2021, 224, 35–53.e33.
  3. Jafari, M.; Pormohammad, A.; Sheikh Neshin, S.A.; Ghorbani, S.; Bose, D.; Alimohammadi, S.; Basirjafari, S.; Mohammadi, M.; Rasmussen-Ivey, C.; Razizadeh, M.H.; et al. Clinical characteristics and outcomes of pregnant women with COVID-19 and comparison with control patients: A systematic review and meta-analysis. Rev. Med. Virol. 2021, 31, e2208.
  4. Mullins, E.; Hudak, M.L.; Banerjee, J.; Getzlaff, T.; Townson, J.; Barnette, K.; Playle, R.; Perry, A.; Bourne, T.; Lees, C.C.; et al. Pregnancy and neonatal outcomes of COVID-19: Coreporting of common outcomes from PAN-COVID and AAP-SONPM registries. Ultrasound Obstet. Gynecol. Off. J. Int. Soc. Ultrasound Obstet. Gynecol. 2021, 57, 573–581.
  5. Dumitriu, D.; Emeruwa, U.N.; Hanft, E.; Liao, G.V.; Ludwig, E.; Walzer, L.; Arditi, B.; Saslaw, M.; Andrikopoulou, M.; Scripps, T.; et al. Outcomes of Neonates Born to Mothers With Severe Acute Respiratory Syndrome Coronavirus 2 Infection at a Large Medical Center in New York City. JAMA Pediatr. 2021, 175, 157–167.
  6. Norman, M.; Navér, L.; Söderling, J.; Ahlberg, M.; Hervius Askling, H.; Aronsson, B.; Byström, E.; Jonsson, J.; Sengpiel, V.; Ludvigsson, J.F.; et al. Association of Maternal SARS-CoV-2 Infection in Pregnancy With Neonatal Outcomes. JAMA 2021, 325, 2076–2086.
  7. Walker, K.F.; O’Donoghue, K.; Grace, N.; Dorling, J.; Comeau, J.L.; Li, W.; Thornton, J.G. Maternal transmission of SARS-CoV-2 to the neonate, and possible routes for such transmission: A systematic review and critical analysis. BJOG 2020, 127, 1324–1336.
  8. Shanes, E.D.; Miller, E.S.; Otero, S.; Ebbott, R.; Aggarwal, R.; Willnow, A.S.; Ozer, E.A.; Mithal, L.B.; Goldstein, J.A. Placental Pathology After SARS-CoV-2 Infection in the Pre-Variant of Concern, Alpha / Gamma, Delta, or Omicron Eras. Int. J. Surg. Pathol. 2022.
  9. Shanes, E.D.; Mithal, L.B.; Otero, S.; Azad, H.A.; Miller, E.S.; Goldstein, J.A. Placental Pathology in COVID-19. Am. J. Clin. Pathol. 2020, 154, 23–32.
  10. Mourad, M.; Jacob, T.; Sadovsky, E.; Bejerano, S.; Simone, G.S.-D.; Bagalkot, T.R.; Zucker, J.; Yin, M.T.; Chang, J.Y.; Liu, L.; et al. Placental response to maternal SARS-CoV-2 infection. Sci. Rep. 2021, 11, 14390.
  11. Sánchez-Luna, M.; Fernández Colomer, B.; de Alba Romero, C.; Alarcón Allen, A.; Baña Souto, A.; Camba Longueira, F.; Cernada Badía, M.; Galve Pradell, Z.; González López, M.; López Herrera, M.C.; et al. Neonates Born to Mothers With COVID-19: Data From the Spanish Society of Neonatology Registry. Pediatrics 2021, 147, e2020015065.
  12. Gulersen, M.; Alvarez, A.; Rochelson, B.; Blitz, M.J. Preterm birth and severe maternal morbidity associated with SARS-CoV-2 infection during the Omicron wave. Am. J. Obstet. Gynecol. MFM 2022, 4, 100712.
  13. Gomez, U.T.; Francisco, R.P.V.; Baptista, F.S.; Gibelli, M.A.B.C.; Ibidi, S.M.; Carvalho, W.B.d.; Paganoti, C.d.F.; Sabino, E.C.; Silva, L.C.d.O.d.; Jaenisch, T.; et al. Impact of SARS-CoV-2 on pregnancy and neonatal outcomes: An open prospective study of pregnant women in Brazil. Clinics 2022, 77, 100073.
  14. Villar, J.; Ariff, S.; Gunier, R.B.; Thiruvengadam, R.; Rauch, S.; Kholin, A.; Roggero, P.; Prefumo, F.; do Vale, M.S.; Cardona-Perez, J.A.; et al. Maternal and Neonatal Morbidity and Mortality Among Pregnant Women With and Without COVID-19 Infection: The INTERCOVID Multinational Cohort Study. JAMA Pediatr. 2021, 175, 817–826.
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Subjects: Infectious Diseases
Contributors MDPI registered users' name will be linked to their SciProfiles pages. To register with us, please refer to https://encyclopedia.pub/register :
Margaret H. Kyle
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Dani Dumitriu
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Book: Encyclopedia of COVID-19
Online Date: 12 Jan 2023
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