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Published on: February 23, 2014
Meningitis caused by Neisseria Meningitidis, Hemophilus Influenzae Type B and Streptococcus Pneumoniae during
Mehmet Ceyhan1, Nezahat Gürler, Yasemin Ozsurekci
1a Department of Pediatric Infectious Diseases ; Hacettepe University Faculty of Medicine ; Ankara , Turkey.
Abstract:
Successful vaccination policies for protection from bacterial meningitis are dependent on determination of the etiology of bacterial meningitis. Cerebrospinal fluid (CSF) samples were obtained prospectively from children from 1 month to ≤18 years of age hospitalized with suspected meningitis, in order to determine the etiology of meningitis in Turkey. DNA evidence of Neisseria meningitidis (N. meningitidis), Streptococcus pneumoniae (S. pneumoniae), and Hemophilus influenzae type b (Hib) was detected using multiplex polymerase chain reaction (PCR). In total, 1452 CSF samples were evaluated and bacterial etiology was determined in 645 (44.4%) cases between 2005 and 2012; N. meningitidis was detected in 333 (51.6%), S. pneumoniae in 195 (30.2%), and Hib in 117 (18.1%) of the PCR positive samples. Of the 333 N. meningitidis positive samples 127 (38.1%) were identified as serogroup W-135, 87 (26.1%) serogroup B, 28 (8.4%) serogroup A and 3 (0.9%) serogroup Y; 88 (26.4%) were non-groupable. As vaccines against the most frequent bacterial isolates in this study are available and licensed, these results highlight the need for broad based protection against meningococcal disease in Turkey.
Insights
Bacterial meningitis etiology in Turkish children was determined using multiplex PCR. Neisseria meningitidis, Streptococcus pneumoniae, and Hib were identified, highlighting the need for broad meningococcal vaccines.
Area of Science:
- Pediatric Infectious Diseases
- Microbiology
- Vaccinology
Background:
- Bacterial meningitis prevention relies on understanding causative agents.
- Etiological determination is crucial for effective vaccination strategies.
Purpose of the Study:
- To determine the bacterial etiology of meningitis in children in Turkey.
- To inform vaccination policies by identifying prevalent bacterial pathogens.
Main Methods:
- Prospective collection of cerebrospinal fluid (CSF) samples from hospitalized children (1 month to 18 years).
- Multiplex polymerase chain reaction (PCR) used to detect DNA of Neisseria meningitidis, Streptococcus pneumoniae, and Hemophilus influenzae type b (Hib).
Main Results:
- Bacterial etiology was identified in 44.4% of 1452 CSF samples.
- Neisseria meningitidis was the most frequent isolate (51.6%), followed by Streptococcus pneumoniae (30.2%) and Hib (18.1%).
- Among N. meningitidis isolates, serogroup W-135 was most common (38.1%), followed by serogroup B (26.1%).
Conclusions:
- Available vaccines target the most frequent bacterial isolates identified.
- Results underscore the necessity for comprehensive meningococcal disease protection in Turkey.
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