Monthly Analysis of Infant Mortality Rate in Portugal during the COVID-19 Pandemic: Insights from Continuous Monitoring

Authors

  • Paulo Jorge Nogueira Escola Nacional de Saúde Pública (ENSP). Centro de Investigação em Saúde Pública (CISP). Comprehensive Health Research Center (CHRC). Universidade NOVA de Lisboa. Lisboa; Laboratório Associado TERRA. Instituto de Saúde Ambiental. Faculdade de Medicina. Universidade de Lisboa. Lisboa; EPI Task-Force. Faculdade de Medicina. Universidade de Lisboa. Lisboa. https://orcid.org/0000-0001-8316-5035
  • Catarina Camarinha EPI Task-Force. Faculdade de Medicina. Universidade de Lisboa. Lisboa; Área Disciplinar Autónoma de Bioestatística (Laboratório de Biomatemática). Faculdade de Medicina. Universidade de Lisboa. Lisboa.
  • Rodrigo Feteira-Santos Laboratório Associado TERRA. Instituto de Saúde Ambiental. Faculdade de Medicina. Universidade de Lisboa. Lisboa; EPI Task-Force. Faculdade de Medicina. Universidade de Lisboa. Lisboa; Área Disciplinar Autónoma de Bioestatística (Laboratório de Biomatemática). Faculdade de Medicina. Universidade de Lisboa. Lisboa. https://orcid.org/0000-0002-5780-2288
  • Andreia Silva Costa Laboratório Associado TERRA. Instituto de Saúde Ambiental. Faculdade de Medicina. Universidade de Lisboa. Lisboa; Centro de Investigação, Inovação e Desenvolvimento em Enfermagem de Lisboa (CIDNUR). Escola Superior de Enfermagem de Lisboa. Lisboa; Católica Research Centre for Psychological, Family and Social Wellbeing (CRC-W). Universidade Católica Portuguesa. Lisboa. https://orcid.org/0000-0002-2727-4402
  • Miguel de-Araújo-Nobre EPI Task-Force. Faculdade de Medicina. Universidade de Lisboa. Lisboa; Clínica Universitária de Estomatologia. Faculdade de Medicina. Universidade de Lisboa. Lisboa. https://orcid.org/0000-0002-7084-8301
  • Leonor Bacelar-Nicolau Laboratório Associado TERRA. Instituto de Saúde Ambiental. Faculdade de Medicina. Universidade de Lisboa. Lisboa; EPI Task-Force. Faculdade de Medicina. Universidade de Lisboa. Lisboa; Área Disciplinar Autónoma de Bioestatística (Laboratório de Biomatemática). Faculdade de Medicina. Universidade de Lisboa. Lisboa. https://orcid.org/0000-0003-0421-1262
  • Cristina Furtado Laboratório Associado TERRA. Instituto de Saúde Ambiental. Faculdade de Medicina. Universidade de Lisboa. Lisboa; EPI Task-Force. Faculdade de Medicina. Universidade de Lisboa. Lisboa; Instituto Nacional de Saúde Doutor Ricardo Jorge. Lisboa. https://orcid.org/0000-0003-2632-0945
  • Cecília Elias EPI Task-Force. Faculdade de Medicina. Universidade de Lisboa. Lisboa; Unidade de Saúde Pública Francisco George. Agrupamento de Centros de Saúde Lisboa Norte. Administração Regional de Saúde de Lisboa e Vale do Tejo. Lisboa. https://orcid.org/0000-0002-3922-7152

DOI:

https://doi.org/10.20344/amp.19642

Keywords:

COVID-19, Infant Mortality, Infant, Newborn, Pandemics, Portugal

Abstract

Introduction: The COVID-19 pandemic significantly impacted global public health. Infant mortality rate (IMR), a vital statistic and key indicator of a population’s overall health, is essential for developing effective health prevention programs. Existing evidence primarily indicates a decrease in IMR during the COVID-19 pandemic. We conducted a national-level analysis to calculate IMR and describe its course over the years (from 2016 until 2022), using a month-by-month analysis.
Methods: Data on the number of deaths under one year of age was collected from the Portuguese E-Death Certification System (SICO), and data on the number of monthly live births was obtained from Statistics Portugal. The IMR was calculated per month, considering the previous 12 months’ cumulative number of deaths under one year of age and the number of live births.
Results: In Portugal, the IMR decreased before and during the COVID-19 pandemic. The lowest values were observed in September and October 2021 (2.15 and 2.14 per 1000 live births, respectively). The IMR remained below the threshold of three deaths per 1000 live births during the pandemic’s critical period.
Conclusion: Portugal has achieved remarkable progress in reducing its IMR over the last 60 years. The country recorded its lowest-ever IMR values during the COVID-19 pandemic. Further studies are needed to fully understand the observed trends.

Downloads

Download data is not yet available.

References

World Health Organization. Weekly epidemiological update on COVID-19 – 19 January 2024. [cited 2024 Feb 14]. Available from: https://www.who.int/

publications/m/item/covid-19-epidemiological-update---19-january-2024.

Gill JR, DeJoseph ME. The importance of proper death certification during the COVID-19 pandemic. JAMA. 2020;324:27-8. DOI: https://doi.org/10.1001/jama.2020.9536

World Health Organization. Infant mortality rate (between birth and 11 months per 1000 live births). [cited 2023 Jan 08]. Available from: https://www.who.

int/data/gho/indicator-metadata-registry/imr-details/1.

Reidpath DD, Allotey P. Infant mortality rate as an indicator of population health. J Epidemiol Community Health. 2003;57:344-6. DOI: https://doi.org/10.1136/jech.57.5.344

Ozdemir S, Oruç MA. Evaluation of stillbirths and infant mortality before and during the COVID-19 pandemic: a retrospective study. Postgrad Med.

;134:524-32.

United Nations International Children’s Emergency Fund. Levels and trends in child mortality - UNICEF DATA. [cited 2023 Jan 05]. Available from: https://data.unicef.org/resources/levels-and-trends-in-child-mortality/.

Khera N, Santesmasses D, Kerepesi C, Gladyshev VN. COVID-19 mortality rate in children is U-shaped. Aging. 2021;13:19954-62. DOI: https://doi.org/10.18632/aging.203442

Santana P, Almendra R. The health of the Portuguese over the last four decades. Méditerranée. 2018;130.

Nogueira PJ, de Araújo Nobre M, Nicola PJ, Furtado C, Carneiro AV. Excess mortality estimation during the COVID-19 pandemic: preliminary data from Portugal. Acta Med Port. 2020;33:376-83. DOI: https://doi.org/10.20344/amp.13928

Direção-Geral da Saúde. Vigilância de mortalidade. Mortalidade em tempo real. [cited 2023 Jan 08]. Available from: https://evm.min-saude.pt/.

Instituto Nacional de Estatística. Nados-vivos (N.o) por local de residência da mãe (NUTS - 2013), sexo e mês de nascimento. [cited 2023 Jan 08]. Available from: https://www.ine.pt/xportal/xmain?xpid=INE&xpgid=ine_indicadores&indOcorrCod=0008086&xlang=pt&contexto=bd&selTab=tab2.

Instituto Nacional de Estatística. Nados-vivos (N.o) por local de residência da mãe (NUTS - 2013) e sexo. [cited 2023 Jan 08]. Available from: https://www.ine.pt/xportal/xmain?xpid=INE&xpgid=ine_indicadores&indOcorrCod=0007286&contexto=bd&selTab=tab2.

United Nations. Handbook of vital statistics systems and methods. Volume 1, Legal, organizational and technical aspects. United Nations, New York 1991. [cited 2023 Jan 04]. Available from: https://digitallibrary.un.org/record/137198.

Driscoll AK, Ely DM. Quarterly provisional estimates for infant mortality, 2020-Quarter 2, 2022. National Center for Health Statistics, National Vital Statistics System, Vital Statistics Rapid Release Program. 2022. [cited 2023 Jan 11]. Available from: https://www.cdc.gov/nchs/nvss/vsrr/infant-mortalitydashboard.htm.

Kramer MS, Demissie K, Yang H, Platt RW, Sauvé R, Liston R. The contribution of mild and moderate preterm birth to infant mortality. JAMA. 2000;284:843-9. DOI: https://doi.org/10.1001/jama.284.7.843

Berghella V, Boelig R, Roman A, Burd J, Anderson K. Decreased incidence of preterm birth during coronavirus disease 2019 pandemic. Am J Obstet Gynecol MFM. 2020;2:100258. DOI: https://doi.org/10.1016/j.ajogmf.2020.100258

Hedermann G, Hedley PL, Bækvad-Hansen M, Hjalgrim H, Rostgaard K, Poorisrisak P. Danish premature birth rates during the COVID-19 lockdown. Arch Dis Child Fetal Neonatal Ed. 2021;106:93-5. DOI: https://doi.org/10.1136/archdischild-2020-319990

Haddadin Z, Schuster JE, Spieker AJ, Rahman H, Blozinski A, Stewart L. Acute respiratory illnesses in children in the SARS-CoV-2 pandemic: prospective multicenter study. Pediatrics. 2021;148:e2021051462. DOI: https://doi.org/10.1542/peds.2021-051462

Honeyford K, Coughlan C, Nijman RG, Expert P, Burcea G, Maconochie I. Changes in emergency department activity and the first COVID-19 lockdown: a cross-sectional study. West J Emerg Med. 2021;22:603-7. DOI: https://doi.org/10.5811/westjem.2021.2.49614

Downloads

Published

2024-03-20

How to Cite

1.
Nogueira PJ, Camarinha C, Feteira-Santos R, Silva Costa A, de-Araújo-Nobre M, Bacelar-Nicolau L, Furtado C, Elias C. Monthly Analysis of Infant Mortality Rate in Portugal during the COVID-19 Pandemic: Insights from Continuous Monitoring. Acta Med Port [Internet]. 2024 Mar. 20 [cited 2024 Nov. 24];37(4):247-50. Available from: https://actamedicaportuguesa.com/revista/index.php/amp/article/view/19642

Issue

Section

Original