Daily Medical Update

Acute infectious gastroenteritis

Thursday, August 06, 2026

🔬 Practice-Changing Findings
Evidence from RCTs and meta-analyses published in the last 12 months.

1. Efficacy of probiotics in reducing the duration and severity of acute gastroenteritis in children: A meta-analysis of randomized controlled trials.

Journal of pediatric gastroenterology and nutrition (2025) - Meta-analysis of randomized controlled trials

Key Findings

  • Across 25 RCTs with 5170 children, probiotics reduced diarrhea duration by 7.76 hours versus placebo.
  • Probiotics reduced diarrhea frequency on day 5 by 0.51 stools and reduced vomiting duration by 0.19 days.

📋 Practice Implication: Use probiotics as an adjunct to oral rehydration in selected pediatric AGE cases when a clinically studied product is available.

2. Consensus document of the SEIP/AEPap/SEPEAP/SEGHNP/SEUP on the diagnosis and etiological treatment of infectious acute gastroenteritis.

Anales de pediatria (2025) - Practice guideline

Key Findings

  • Complications were reduced to rare events in Spain, with dehydration and post-enteritis syndrome reported as the most common adverse outcomes.
  • Restricting empiric antibiotics reduced treatment to defined high-risk scenarios such as young infants, sepsis signs, underlying disease, or outbreak-risk settings.

📋 Practice Implication: For uncomplicated pediatric AGE, reserve stool testing and empiric antibiotics for patients with severity markers, prolonged illness, or transmission risk.

3. Probiotics for the prevention of Clostridioides difficile-associated diarrhea in adults and children.

The Cochrane database of systematic reviews (2025) - Systematic review and meta-analysis

Key Findings

  • In 38 trials with 13179 participants, probiotics reduced C. difficile-associated diarrhea from 3.2% to 1.6% versus controls.
  • The relative risk reduction was 50% with probiotics, and one additional C. difficile diarrhea case was prevented for every 65 treated patients.

📋 Practice Implication: Consider short-course probiotic prophylaxis for non-immunocompromised patients receiving systemic antibiotics when baseline CDI risk is meaningful.

4. Burden of Shigella and enterotoxigenic Escherichia coli infections among children under 5 years in Ethiopia, Kenya and Malawi: a systematic review and meta-analysis.

BMJ global health (2026) - Systematic review and meta-analysis

Key Findings

  • The pooled prevalence of Shigella-associated diarrhea was 8%, rising to 24% in Malawi versus 6% in Ethiopia and Kenya.
  • The pooled prevalence of ETEC-associated diarrhea was 11%, with 24% in Malawi versus 7% in Kenya.

📋 Practice Implication: In endemic regions, prioritize Shigella and ETEC surveillance with sensitive diagnostics before choosing empiric therapy or planning vaccines.

5. Antibiotics Versus Surgery for Uncomplicated Acute Appendicitis in Adults: A Meta-analysis of Long-term Outcomes and Risk Factors for Failure.

Surgical laparoscopy, endoscopy & percutaneous techniques (2026) - Systematic review and meta-analysis

Key Findings

  • Seven RCTs with 3164 adults showed lower 1-year treatment success with antibiotics versus surgery, 73.8% versus 98.1%.
  • Complication rates were comparable, but patients with appendicolith had antibiotic failure rates up to 46%.

📋 Practice Implication: When appendicitis mimics infectious gastroenteritis, CT-confirmed appendicolith should steer shared decisions away from antibiotic-only management.

💡 Summary

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Generated from 120 PubMed abstracts · RCTs and Meta-analyses only

Next topic: Infections of the pleural space and empyema

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