Frequency of Helicobacter pylori infection in children under 4 years of age

Area of Science:

• Pediatric infectious diseases
• Gastroenterology
• Microbiology

Background:

• Helicobacter pylori (Hp) is a significant human pathogen.
• Understanding Hp infection prevalence in young children is crucial for public health.
• Early detection and risk factor identification are essential for managing childhood infections.

Purpose of the Study:

• To determine the frequency of Helicobacter pylori (Hp) infection in children under 4 years of age.
• To identify risk factors associated with Hp infection in this age group.
• To evaluate the utility of the non-radioactive (13)C urea breath test (UBT) for epidemiological studies in young children.

Main Methods:

• A cohort of 198 children (6 months to 4 years) underwent non-radioactive (13)C urea breath test (UBT).
• Urea breath test (UBT) involved measuring (13)CO(2)/(12)CO(2) ratios via mass spectrometry after a standard meal.
• Parental questionnaires collected data on child development, symptoms, family history, and socioeconomic conditions.

Main Results:

• Helicobacter pylori (Hp) infection was detected in 18.38% of the children studied.
• Infection rates were not significantly correlated with the child's sex or age.
• Significant risk factors for Hp infection included the presence of Hp in other family members and attendance at créches or kindergartens.

Conclusions:

• Non-radioactive (13)C UBT is a practical and effective method for epidemiological studies of Hp infection in young children.
• Childhood Hp infections were largely asymptomatic and did not impact somatic development in this cohort.
• Family transmission and close contact in childcare settings are key risk factors for Hp acquisition in children under 4.