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Infectious etiology modifies the treatment effect of zinc in severe pneumonia

Christian L Coles1, Anuradha Bose, Prabhakar D Moses

  • 1Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA. ccoles@jhsph.edu

The American Journal of Clinical Nutrition
|August 9, 2007
PubMed

Insights

Zinc supplementation may improve outcomes for severe pediatric pneumonia, but its effectiveness differs based on the cause. Bacterial infections might influence zinc’s treatment effect, warranting further research for optimal use in children.

Area of Science:

  • Pediatric Infectious Diseases
  • Nutritional Science
  • Clinical Pharmacology

Background:

  • Severe pediatric pneumonia is a significant global health concern.
  • Zinc is being investigated as a cost-effective therapeutic adjuvant for severe pneumonia in children.

Purpose of the Study:

  • To investigate how the etiology of severe pneumonia influences the treatment effect of zinc in hospitalized young children.
  • To stratify treatment effects based on suspected bacterial versus nonbacterial causes.

Main Methods:

  • A randomized, double-blind, placebo-controlled trial was conducted with 299 children aged 2-23 months.
  • Participants received either zinc sulfate or placebo twice daily during hospitalization.
  • Pneumonia etiology was classified using serum C-reactive protein (CRP) concentrations at admission.

Main Results:

  • Etiology significantly modified the treatment effect of zinc on hospitalization length (P = 0.022).
  • In suspected bacterial pneumonia (CRP >40 mg/L), zinc supplementation was associated with a longer hospital stay.
  • No modification of zinc's treatment effect was observed in suspected nonbacterial pneumonia cases.

Conclusions:

  • The treatment efficacy of zinc for severe pediatric pneumonia may be influenced by the presence of bacterial infection.
  • Further research is needed to establish evidence-based recommendations for zinc use in severe pneumonia treatment.
  • Clinical trial registration: NCT00198666.
Abstract

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