Pneumococcal meningitis and endocarditis in an infant: possible improved survival with factor V Leiden mutation

Area of Science:

• Pediatric Infectious Diseases
• Hematology
• Critical Care Medicine

Background:

• Invasive pneumococcal disease (IPD) is a significant cause of morbidity and mortality in children.
• Streptococcus pneumoniae endocarditis is a rare but severe complication of IPD, particularly in healthy infants.
• The role of genetic factors in the outcomes of severe pediatric infections is an area of ongoing research.

Observation:

• A previously healthy 10-month-old infant presented with sepsis and meningitis.
• The infant was diagnosed with Streptococcus pneumoniae meningitis and endocarditis.
• Genetic testing revealed the presence of a Factor V Leiden (FVL) mutation.

Findings:

• Despite initial severe complications, the infant with Streptococcus pneumoniae meningitis and endocarditis, who also had the FVL mutation, made a complete recovery.
• Emerging evidence suggests a correlation between FVL mutation and improved outcomes in critically ill children.
• The presence of FVL mutation may confer a protective effect in severe pediatric invasive pneumococcal disease.

Implications:

• The findings suggest that Factor V Leiden mutation might be associated with better prognoses in critically ill children with severe bacterial infections.
• Further research is warranted to elucidate the mechanisms underlying this potential protective association.
• This case underscores the importance of considering genetic predispositions in managing severe pediatric sepsis and invasive pneumococcal disease.