Staphylococcal pneumonia in infants and children

Area of Science:

• Pediatric Infectious Diseases
• Pulmonary Medicine
• Microbiology

Background:

• Acute Staphylococcus aureus pneumonia is a serious condition in infants and children.
• This study reviews a significant cohort over a 13.5-year period.

Purpose of the Study:

• To analyze the clinical presentation, radiographic findings, and outcomes of acute Staphylococcus aureus pneumonia in pediatric patients.
• To identify factors associated with mortality in these cases.

Main Methods:

• Retrospective review of medical records for 79 infants and children diagnosed with acute Staphylococcus aureus pneumonia between 1965 and 1978.
• Classification of cases into primary staphylococcal pneumonia and secondary pneumonia (disseminated disease).
• Analysis of clinical signs, radiographic abnormalities, blood culture results, and treatment regimens.

Main Results:

• Primary pneumonia occurred in 61 infants (median age 6 months), secondary in 18 children (median age 5.5 years).
• Common findings included fever, respiratory distress, pleural effusion (80% in primary), and lobar consolidation.
• Rapid progression occurred in 28% of infants. Case fatality rate was 25%, with higher mortality linked to earlier admission dates, ineffective antibiotics, extensive lung involvement, and low white blood cell counts.

Conclusions:

• Staphylococcus aureus pneumonia presents differently in infants versus older children, with significant morbidity and mortality.
• Factors such as disease extent, timely and appropriate antibiotic therapy, and host immune status (indicated by WBC count) significantly impact survival.