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  • Title: Evaluation of co-agglutination (COA), counter immunoelectrophoresis (CIE), culture and direct microscopic (Dm) examination of cere-brospinal fluid (CSF) for detection of meningitis caused by common bacterial pathogens.
    Author: Chowdhury ZU, Rahman KM, Miah RA, Hussain T, Asna ZH, Khan WA.
    Journal: Bangladesh Med Res Counc Bull; 1990 Jun; 16(1):34-41. PubMed ID: 2205198.
    Abstract:
    Cerebrospinal fluid from 260 children clinically diagnosed as meningitis were examined by Dm, culture, COA and CIE test. Dm revealed the presence of bacteria in 41 (15.8%) whereas culture showed growth of organism in 52 (20%) cases. COA and CIE test were done for the detection of antigen of H. influenzae, S. pneumoniae and N. meningitidis. Among the 3 methods viz. culture, COA and CIE test which were used for the detection of the above three organisms COA detected the maximum numbers (23.5%). COA test could detect antigen in both culture positive and culture negative CSF samples. COA test detected 100% of pneumococcal, 88.5% of H. influenzae and 66.7% of N. meningitidis antigens from CSF. Diagnosis by CIE in detecting H. influenzae and N. meningitidis antigens is inferior to culture and COA, whereas in detecting pneumococcal antigens CIE is superior to culture. So COA is a valuable, cheap, rapid and sensitive method for the diagnosis of meningitis caused by the above three organisms and when used along with culture 100% of cases can be diagnosed.
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