Determinants of Antibiotic Use and Bacterial Coinfection in Adults Diagnosed with Influenza - Scorecard - MDSpire

Determinants of Antibiotic Use and Bacterial Coinfection in Adults Diagnosed with Influenza

  • By

  • Niklas Steger

  • Erik Isaksson

  • Anna M. Nordenskjöld

  • Simon Athlin

  • March 25, 2026

  • 0 min

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Clinical Scorecard: Determinants of Antibiotic Use and Bacterial Coinfection in Adults Diagnosed with Influenza

At a Glance

CategoryDetail
ConditionInfluenza with potential bacterial coinfection
Key MechanismsRT-PCR for influenza diagnosis; clinical signs and biomarkers for bacterial coinfection assessment
Target PopulationAdults ≥ 18 years presenting to the ED with clinical suspicion of influenza
Care SettingEmergency Departments (EDs)

Key Highlights

  • Influenza causes significant morbidity and mortality, with bacterial coinfection contributing to up to 25% of influenza-related deaths.
  • RT-PCR allows for rapid diagnosis of influenza, but bacterial cultures take longer, complicating management.
  • Antibiotic overprescription is common in viral RTIs, particularly in ED settings.
  • Biomarkers may better predict bacterial coinfection than clinical signs alone.
  • Strengthening antibiotic stewardship is essential to combat antimicrobial resistance.

Guideline-Based Recommendations

Diagnosis

  • Utilize RT-PCR for accurate influenza diagnosis.
  • Assess clinical signs and biomarkers to evaluate bacterial coinfection risk.

Management

  • Implement antibiotic stewardship programs to reduce unnecessary antibiotic use.

Monitoring & Follow-up

  • Monitor for signs of bacterial coinfection in patients diagnosed with influenza.

Risks

  • Be aware of the risk of antibiotic overuse leading to antimicrobial resistance.

Patient & Prescribing Data

Adults with confirmed influenza presenting to the ED.

Antibiotics may be initiated despite confirmed influenza due to concerns about bacterial coinfection.

Clinical Best Practices

  • Use clinical and biochemical factors to guide antibiotic initiation.
  • Consider the duration of illness and comorbidities when assessing patients.

References

Original Source(s)

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