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Updated: Sep 23, 2026

Visualization of Streptococcus pneumoniae within Cardiac Microlesions and Subsequent Cardiac Remodeling
Published on: April 7, 2015
[Case report: difficulty in treating one event of Streptococcus pneumoniae meningitis]
Kenan Hizel1, Ozlem Güzel, Arzu Altunçekiç
1Gazi Universitesi Tip Fakültesi, Klinik Bakteriyoloji ve Enfeksiyon Hastaliklari Anabilim Dali, Ankara.
Abstract:
Streptococcus pneumoniae is one of the leading causes of acute bacterial meningitis and the emergence of antibiotic resistant pneumococci is an increasing problem worldwide. In this report, a 22-years-old woman was presented with pneumococcal meningitis occurring twice in a 5 months period. After the first meningitis attack, the patient had been vaccinated by 23-valent polysaccharide vaccine but the illness has relapsed. Although S. pneumoniae which was isolated from the patient has been found intermediate resistant to penicillin and susceptible to ceftriaxone by E-test, the patient could be treated only with meropenem. The case has been presented and discussed for ceftriaxone failure in spite of in-vitro susceptibility. On the other hand, this case indicated that vaccination might fail to prevent recurrence.
Insights
Recurrent pneumococcal meningitis occurred in a vaccinated patient, highlighting treatment challenges and potential vaccine limitations. This case underscores the need for further research into antibiotic resistance and vaccine efficacy for Streptococcus pneumoniae.
Area of Science:
- Infectious Diseases
- Microbiology
- Immunology
Background:
- Streptococcus pneumoniae is a primary cause of bacterial meningitis.
- Antibiotic-resistant strains of S. pneumoniae pose a growing global health threat.
Observation:
- A 22-year-old woman experienced two episodes of pneumococcal meningitis within five months.
- Despite receiving the 23-valent polysaccharide vaccine after the first episode, the patient relapsed.
Findings:
- The isolated S. pneumoniae showed intermediate resistance to penicillin and susceptibility to ceftriaxone via E-test.
- Treatment was only successful with meropenem, indicating ceftriaxone failure despite in-vitro susceptibility.
Implications:
- This case highlights the potential for vaccine failure in preventing recurrent S. pneumoniae infections.
- It emphasizes the critical need to investigate mechanisms of treatment failure, even with susceptible antibiotics.
- The findings underscore the challenges in managing antibiotic-resistant pneumococcal meningitis.
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