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Preterm Birth

GMJ News knowledge hub · last reviewed August 2026 · Georgian Medical Journal

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Preterm birth — delivery before 37 completed weeks of gestation — affects approximately 15 million babies every year, causing over 1 million deaths and making it the single largest cause of under-5 child mortality globally (WHO). Survivors face lifelong risks of neurodevelopmental disability, respiratory disease, vision impairment and chronic conditions — with the burden falling overwhelmingly on LMICs where neonatal intensive care is absent. Proven interventions — antenatal corticosteroids, magnesium sulfate for neuroprotection, kangaroo mother care and CPAP — save hundreds of thousands of lives when delivered at scale.

Key messages

15 million births, 1 million deaths
15 million babies are born preterm every year — and complications of preterm birth are the single largest cause of under-5 child mortality, killing over 1 million children annually (WHO).
Before 37 weeks
Preterm birth is defined as birth before 37 completed weeks of gestation. Severity categories: extremely preterm (<28 weeks); very preterm (28-32 weeks); moderate-late preterm (32-37 weeks). Earlier birth = higher risk of death and disability.
Proven interventions save lives
Antenatal corticosteroids (dexamethasone/betamethasone) given to mothers at risk of preterm birth accelerate fetal lung maturity, reducing neonatal death and respiratory distress syndrome by 30-40%. Magnesium sulfate reduces cerebral palsy by 30%. Kangaroo mother care (KMC) reduces mortality by 36%.
Kangaroo mother care
Kangaroo mother care — continuous skin-to-skin contact between mother and preterm baby — is the single most impactful intervention for preterm baby survival in LMICs. It stabilises temperature, promotes breastfeeding and bonding, and reduces infection.
94% of deaths in LMICs
94% of preterm births occur in LMICs. In high-income countries, survival rates for babies born at 24 weeks exceed 50%; in many LMICs, babies born at 28+ weeks die for lack of basic warming and feeding support.
WHO Every Preemie
WHO's Every Preterm Baby Born programme and the Survive and Thrive initiative target universal access to preterm care interventions — antenatal corticosteroids, KMC, CPAP and nutrition support.

Key statistics

15M
preterm births/year
WHO
1M
deaths from preterm complications/year
WHO
#1
cause of under-5 mortality globally
WHO/UNICEF
94%
of preterm births in LMICs
WHO
36%
mortality reduction with kangaroo care
Cochrane/WHO
30-40%
mortality reduction with antenatal corticosteroids
WHO

Preterm birth rates by region (% of live births) — WHO 2023

Source: WHO/UNICEF/UNFPA. Sub-Saharan Africa and South Asia have the highest rates AND the fewest resources.

Glossary of key terms

Preterm birth
WHO
Birth before 37 completed weeks of gestation. Classified as: extremely preterm (<28 weeks); very preterm (28-32 weeks); moderate-late preterm (32-37 weeks). Most preterm deaths occur in the extremely and very preterm groups.
Antenatal corticosteroids
WHO/Cochrane
Betamethasone or dexamethasone given to women at risk of preterm birth (24-34 weeks) to accelerate fetal lung maturity — the most impactful intervention in preterm care. Reduces neonatal death by 31%, RDS by 34%, and IVH by 46%.
Kangaroo mother care (KMC)
WHO
Continuous skin-to-skin contact between mother/caregiver and preterm baby (or early KMC in stable premature infants) — provided 24 hours a day, 7 days a week. Reduces mortality by 36%, severe infection by 61% and hypothermia.
CPAP
WHO/neonatology
Continuous positive airway pressure — a respiratory support device that keeps preterm lungs open by delivering pressurised air. The standard of care for preterm respiratory distress syndrome (RDS) where surfactant is unavailable. Reduces need for mechanical ventilation.
Magnesium sulfate (neuroprotection)
WHO
Given IV to women at risk of imminent preterm birth before 32 weeks — reduces cerebral palsy risk in the preterm infant by approximately 30%. Also used for eclampsia prevention in preeclampsia.
Respiratory distress syndrome (RDS)
WHO/neonatology
The most common complication of extreme and very preterm birth — caused by surfactant deficiency in immature lungs. Treated with exogenous surfactant (instilled into trachea) and respiratory support (CPAP or mechanical ventilation).

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