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Fever response to acetaminophen in viral vs. bacterial infections

M E Weisse1, G Miller, J H Brien

  • 1Department of Pediatrics, Brooke Army Medical Center, Fort Sam Houston, TX 78234-6200.

The Pediatric Infectious Disease Journal
|December 1, 1987
PubMed

Insights

Acetaminophen effectively reduces fever in children, regardless of whether the infection is viral or bacterial. This study found no significant difference in fever reduction between children with bacterial versus viral infections when treated with acetaminophen.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Pharmacology

Background:

  • Fever is a common symptom in pediatric illnesses.
  • Distinguishing between bacterial and viral infections is crucial for appropriate treatment.
  • Acetaminophen is a widely used antipyretic medication in children.

Purpose of the Study:

  • To investigate the efficacy of acetaminophen in reducing fever in children with bacterial versus viral infections.
  • To determine if the etiology of fever influences the response to acetaminophen treatment.

Main Methods:

  • A prospective study involving 100 children (9 days to 17 years) with fever (≥102°F).
  • All participants received acetaminophen (15 mg/kg), with temperature rechecked after 1 hour.
  • Laboratory tests, including white blood cell counts and cultures, were performed to differentiate infection types.

Main Results:

  • Significant differences in white blood cell counts were observed between bacterial and viral infection groups (P < 0.02).
  • No statistically significant difference in fever reduction response to acetaminophen was found between the two groups (P = 0.37).
  • Subsequent analysis of all patients also showed no significant difference in temperature change (P = not significant).

Conclusions:

  • Acetaminophen demonstrates consistent fever-reducing effects in children, irrespective of the underlying infection type (bacterial or viral).
  • The etiological cause of fever in children does not appear to correlate with their response to acetaminophen.
  • Clinical decisions regarding antipyretic use in febrile children should not be based on presumed infection type.

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