Detection rate of Helicobacter pylori stool antigen in newborn infants and small children

Arne Stray-Pedersen1, Peter Gaustad, Babill Stray-Pedersen

  • 1Institute of Forensic Medicine, University of Oslo, Norway. arne.stray-pedersen@labmed.uio.no

Insights

Helicobacter pylori (H. pylori) antigen was found in over half of Norwegian neonates, suggesting transient colonization. Detection rates decreased significantly in older infants and children.

Area of Science:

  • Microbiology
  • Pediatrics
  • Gastroenterology

Background:

  • Helicobacter pylori infection is a significant global health concern.
  • Understanding H. pylori transmission and colonization in early life is crucial for public health.
  • Previous studies have focused less on neonatal H. pylori prevalence.

Purpose of the Study:

  • To determine the prevalence of H. pylori antigen in stool samples from Norwegian neonates and young children.
  • To explore potential associations between H. pylori antigen detection and factors like age and mode of delivery.

Main Methods:

  • Stool samples were collected from 249 children aged 0 days to 3 years.
  • H. pylori stool antigen test (HpSA) immunoassay was used for detection.
  • Polymerase chain reaction (PCR) targeting the 16S rDNA Helicobacter gene was employed for verification.

Main Results:

  • H. pylori antigen was detected in 52% of neonates, 15% of infants (7 days-1 month), and 5% of children (1 month-3 years).
  • Neonatal H. pylori detection was significantly higher in those born via uncomplicated vaginal birth (59%) compared to Cesarean section (10%).
  • PCR confirmed H. pylori or related species in 35% of HpSA-positive samples.

Conclusions:

  • The high H. pylori antigen prevalence in neonates is unexpected and suggests transient neonatal colonization.
  • Lower H. pylori antigen detection rates in older children align with existing data from Western countries.
  • Further research is warranted to understand the implications of neonatal H. pylori colonization.
Abstract

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