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Emerging invasive nonvaccine pneumoccocal serotype 25

Badria Rashid Al Waili1, Suleiman Alola, Esam Albanyan

  • 1Suleiman Al Alola, MD, Department of Pediatrics,, Infectious Disease Division,, King Abdulaziz Medical City,, PO Box 22490, Riyadh, 11426,, Saudi Arabia, alloaS@ngha.med.sa.

Annals of Saudi Medicine
|July 4, 2012
PubMed

Insights

Pneumococcal conjugate vaccine (PCV7) reduced disease, but nonvaccine serotypes like type 25 may emerge. This case highlights invasive nonvaccine serotype 25 meningitis, underscoring evolving pneumococcal disease threats.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Vaccinology

Background:

  • Streptococcus pneumoniae causes severe infections like meningitis and pneumonia.
  • Pneumococcal conjugate vaccine (PCV7) reduced disease burden but covers only 7 of 92+ serotypes.
  • Concerns exist regarding the rise of nonvaccine serotypes post-vaccination.

Observation:

  • A case of invasive meningitis caused by a nonvaccine serotype of Streptococcus pneumoniae was identified.
  • The specific serotype involved was identified as nonvaccine serotype 25.

Findings:

  • The study reports a case of invasive meningitis attributed to Streptococcus pneumoniae serotype 25.
  • This highlights the potential for nonvaccine serotypes to cause severe invasive disease.

Implications:

  • Findings suggest that nonvaccine serotypes may pose a continued or emerging threat despite widespread PCV7 vaccination.
  • This underscores the need for ongoing surveillance of pneumococcal serotype prevalence and the development of broader-spectrum vaccines.

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