Analysis of Epidemiological Data and Risk Factors for Helicobacter pylori Infection Among Children and Adolescents in Hainan Province

Category	Detail
Condition	Helicobacter pylori infection
Key Mechanisms	Colonization of gastric mucosa by microaerophilic, Gram-negative, spiral-shaped bacterium with helical morphology and flagella enabling survival in acidic stomach environment
Target Population	Children and adolescents aged 6–17 years in Hainan Province, China
Care Setting	School-based epidemiological survey with clinical testing and questionnaire assessment

H. pylori is a Group I carcinogen linked to chronic gastritis, peptic ulcer, gastric cancer, MALT lymphoma, GERD, and functional dyspepsia.
Global prevalence remains high in children and adolescents, especially in low socioeconomic and poor sanitation areas; adolescent prevalence in China reported at 24.89%.
Traditional PPI-based triple therapy efficacy is declining below 80% due to increasing clarithromycin resistance.

Use C13 urea breath test (C13-UBT) for non-invasive detection of H. pylori infection.

Standard treatment includes PPI-based triple therapy combining PPI, clarithromycin, and amoxicillin or metronidazole.
Consider antibiotic resistance patterns, especially clarithromycin resistance mutations (A2143G, A2144G), when selecting therapy.

Monitor treatment efficacy due to declining eradication rates linked to antibiotic resistance.

Risk factors include close family contact, poor sanitation, high population density, and lower socioeconomic status.
Avoid recent use of antibiotics, PPIs, or bismuth agents before diagnostic testing to prevent false negatives.

Children and adolescents aged 6–17 years attending schools in Hainan Province

High clarithromycin resistance reduces efficacy of standard triple therapy; tailored treatment strategies may be necessary.

Obtain informed consent from parents and participants prior to testing and data collection.
Use stratified sampling to ensure representative epidemiological data across geographic and socioeconomic groups.
Administer questionnaires with parental assistance for children under 12 to ensure data accuracy.
Exclude patients with recent antibiotic, PPI, or bismuth use to avoid diagnostic interference.
Consider regional antibiotic resistance patterns when selecting eradication regimens.

Clinical Scorecard: Analysis of Epidemiological Data and Risk Factors for Helicobacter pylori Infection Among Children and Adolescents in Hainan Province