Related Experiment Video
Updated: Aug 19, 2026
Gastric Mucosa Quantitative Polymerase Chain Reaction Analysis for Detecting Helicobacter pylori and Antibiotic Resistance
Published on: March 7, 2025
Helicobacter pylori status and symptom assessment two years after eradication in pediatric patients from a high
Anna Maria Magistà1, Enzo Ierardi, Stefania Castellaneta
1Dipartimento di Biomedicina Età Evolutiva, University of Bari, Italy.
Insights
Children in high Helicobacter pylori prevalence areas face a significant reinfection risk (12.8% per year). Age at initial infection and having an infected sibling predict reinfection, necessitating re-evaluation of H. pylori status post-eradication.
Area of Science:
- Pediatric Infectious Diseases
- Gastroenterology
- Microbiology
Background:
- Helicobacter pylori infection is a common global health concern, particularly in high-prevalence regions.
- Successful eradication of H. pylori in children is crucial to prevent long-term complications.
- Understanding reinfection dynamics is vital for effective public health strategies.
Purpose of the Study:
- To determine the rate of H. pylori reinfection in children residing in a high-prevalence area.
- To identify clinical features that predict H. pylori reinfection in pediatric patients.
- To assess the efficacy of re-treatment for H. pylori reinfection.
Main Methods:
- A cohort of 52 children with previously successful H. pylori eradication was followed.
- Participants and family members underwent C-urea breath testing and symptom questionnaires.
- Reinfection was confirmed via C-urea breath test, and re-treatment outcomes were evaluated.
Main Results:
- A significant reinfection rate of 28.8% (15 out of 52 children) was observed over the study period.
- Predictive factors for reinfection included younger age at primary infection and the presence of an infected sibling.
- While reinfected children were more symptomatic, no specific symptom reliably indicated reinfection.
- Re-treatment achieved eradication in 56% of cases.
Conclusions:
- The observed annual reinfection rate of 12.8% in children warrants re-evaluation of H. pylori status even after successful initial eradication.
- Living in a high H. pylori prevalence area significantly increases the annual risk of reinfection compared to low-prevalence areas.
- These findings highlight the importance of ongoing surveillance and potential re-treatment strategies in endemic settings.
Objectives:
To establish the rate of Helicobacter pylori reinfection in children from an H. pylori high prevalence area, possible clinical features predictive of reinfection and the usefulness of re-treatment.
Methods:
65 consecutive children attending the authors' department between 1998 and 2000 who had proven successful H. pylori eradication were enrolled; 52 took part. Patients and family members were invited to undergo C-urea breath testing and to complete a simple questionnaire regarding symptoms and socioeconomic status. Patients with H. pylori reinfection were offered treatment; eradication was assessed by C-urea breath test 8 weeks after completion of treatment.
Results:
Of 52 children, 15 (28.8%) were H. pylori positive. Variables predictive of reinfection were age at primary infection and presence of an infected sibling. Although reinfected children were more frequently symptomatic than non-reinfected patients, no specific symptom was associated with reinfection. Of the nine re-treated patients who returned 8 weeks after completing therapy, the bacterium was eradicated in five (56%).
Conclusions:
The 12.8% per year reinfection rate in childhood at 2 years that we observed should prompt a re-evaluation of H. pylori status even after a successful eradication. Living in an H. pylori high prevalence area increases the annual risk of reinfection by approximately fourfold over the annual risk in H. pylori low prevalence areas.
More Related Videos
04:56Detection of Helicobacter pylori Infection and Antibiotic Resistance via Stool Quantitative Polymerase Chain Reaction Analysis
Published on: May 16, 2025
06:40Quantitative Polymerase Chain Reaction (qPCR)-Based Rapid Diagnosis of Helicobacter pylori Infection and Antibiotic Resistance
Published on: July 28, 2023
Related Concept Videos
01:16Treating Helicobacter pylori in Peptic Ulcers: Antimicrobial Therapy
01:28Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
01:27Peptic Ulcer
01:26Gastritis II: Pathophysiology
01:24Peptic Ulcer Disease II: Pathophysiology
01:25Peptic Ulcer Disease III: Clinical Manifestations and Complications