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Published on: November 5, 2019
Microbial study of meningitis and encephalitis cases
Heba S Selim1, Mohamed A El-Barrawy, Magda E Rakha
1Microbiology Department, High Institute of Public Health, Alexandria University. drhebaselim@yahoo.com
Abstract:
Meningitis and/or encephalitis can pose a serious public health problem especially during outbreaks. A rapid and accurate diagnosis is important for effective earlier treatment. This study aimed to identify the possible microbial causes of meningitis and/or encephalitis cases. CSF and serum samples were collected from 322 patients who had signs and symptoms suggestive of meningitis and/or encephalitis. Out of 250 cases with confirmed clinical diagnosis, 83 (33.2%) were definitely diagnosed as bacterial meningitis and/or encephalitis cases (by using CSF culture, biochemical tests, latex agglutination test, and CSF stain), 17 (6.8%) were definitely diagnosed as having viral causes ( by viral isolation on tissue culture, PCR and ELISA), and one (0.4%) was diagnosed as fungal meningitis case (by India ink stain, culture, and biochemical tests). Also, there was one encephalitis case with positive serum ELISA IgM antibodies against Sandfly scilian virus. N. meningitidis, S. pneumonia and M. tuberculosis were the most frequently detected bacterial agents, while Enteroviruses, herpes simplex viruses and varicella zoster viruses were the most common viral agents encountered. Further studies are needed to assess the role of different microbial agents in CNS infections and their effective methods of diagnosis.
Insights
This study identified microbial causes of meningitis and encephalitis, finding bacterial and viral pathogens are common. Accurate diagnosis is crucial for timely treatment of these serious central nervous system infections.
Area of Science:
- Neuroscience
- Infectious Diseases
- Microbiology
Background:
- Meningitis and encephalitis represent significant public health concerns, particularly during outbreaks.
- Rapid and accurate diagnosis is essential for effective and timely patient treatment.
Purpose of the Study:
- To identify the specific microbial agents responsible for meningitis and/or encephalitis cases.
- To evaluate diagnostic methods for central nervous system infections.
Main Methods:
- Collected cerebrospinal fluid (CSF) and serum samples from 322 patients with suspected meningitis/encephalitis.
- Utilized CSF culture, biochemical tests, latex agglutination, CSF stain, viral isolation, PCR, and ELISA for diagnosis.
- Identified bacterial, viral, and fungal pathogens, as well as specific viral antibodies.
Main Results:
- Out of 250 confirmed cases, 33.2% were bacterial meningitis/encephalitis and 6.8% were viral.
- Bacterial agents included N. meningitidis, S. pneumoniae, and M. tuberculosis.
- Common viral agents were Enteroviruses, herpes simplex viruses, and varicella zoster viruses.
Conclusions:
- Bacterial and viral infections are primary causes of meningitis and encephalitis.
- Further research is needed to explore additional microbial agents and refine diagnostic strategies for CNS infections.
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