Empiric Treatment of Pediatric Community-Acquired Pneumonia (CAP)

Age-Based Treatment Approach

The American Academy of Pediatrics recommends amoxicillin as the first-line treatment for children under 5 years with pediatric community-acquired pneumonia, while macrolide antibiotics are recommended as first-line empirical treatment for children aged 5 and above due to the higher prevalence of Mycoplasma pneumonia in older children 1, 2
For children under 5 years, amoxicillin oral is recommended at a dose of 90 mg/kg/day in 2 doses 1, 3
For children under 5 years, an alternative to amoxicillin is amoxicillin-clavulanate oral, with the amoxicillin component dosed at 90 mg/kg/day in 2 doses 1, 3
For presumed atypical pneumonia in children under 5 years, azithromycin oral is recommended at a dose of 10 mg/kg on day 1, followed by 5 mg/kg/day once daily on days 2-5 1
For children 5 years and older, oral amoxicillin is recommended at a dose of 90 mg/kg/day in 2 doses, up to a maximum of 4 g/day 1, 3
For children 5 years and older with presumed atypical pneumonia or when bacterial vs. atypical CAP cannot be distinguished, a macrolide (azithromycin, clarithromycin, or erythromycin) should be added to the treatment regimen 1, 2
Azithromycin dosing for children 5 years and older is recommended at 10 mg/kg on day 1 (maximum 500 mg), followed by 5 mg/kg/day once daily on days 2-5 (maximum 250 mg) 1

For suspected Streptococcus pneumoniae, amoxicillin is recommended at any age 4, 2
For suspected Mycoplasma or Chlamydia pneumonia, macrolide antibiotics are recommended 4, 2
For suspected Staphylococcus aureus, a macrolide or a combination of flucloxacillin with amoxicillin is recommended 4, 2

For fully immunized children with minimal local penicillin resistance, ampicillin or penicillin G is recommended, with alternatives including ceftriaxone or cefotaxime 1, 3
For not fully immunized children or areas with significant penicillin resistance, ceftriaxone or cefotaxime is recommended, with vancomycin or clindamycin added for suspected CA-MRSA 1, 3
For atypical pneumonia in hospitalized children, azithromycin should be added to β-lactam therapy 1, 3

A 5-day course of antibiotics is recommended for most cases of pediatric CAP 2
Children should demonstrate clinical improvement within 48-72 hours of starting appropriate therapy, and further investigation should be performed if no improvement occurs within this timeframe 1, 3

For children with non-serious allergic reactions to amoxicillin, options include a trial of amoxicillin under medical observation, oral cephalosporin with substantial activity against S. pneumoniae, or macrolide therapy 1
Indicators for hospital admission in infants include oxygen saturation <92%, cyanosis, respiratory rate >70 breaths/min, difficulty breathing, and not feeding 4
Indicators for hospital admission in older children include oxygen saturation <92%, cyanosis, respiratory rate >50 breaths/min, difficulty breathing, signs of dehydration, and family unable to provide appropriate observation 4